diff --git a/hphp/hack/src/client_and_server/serverConfig.ml b/hphp/hack/src/client_and_server/serverConfig.ml
index 0609f073788c6a..55edf0d1200ca6 100644
--- a/hphp/hack/src/client_and_server/serverConfig.ml
+++ b/hphp/hack/src/client_and_server/serverConfig.ml
@@ -428,7 +428,6 @@ let load_config (config : Config_file_common.t) (options : GlobalOptions.t) :
     ?tco_error_php_lambdas:(bool_opt "error_php_lambdas" config)
     ?tco_disallow_discarded_nullable_awaitables:
       (bool_opt "disallow_discarded_nullable_awaitables" config)
-    ?tco_report_pos_from_reason:(bool_opt "report_pos_from_reason" config)
     ?tco_typecheck_sample_rate:(float_opt "typecheck_sample_rate" config)
     ?tco_enable_sound_dynamic:(bool_opt "enable_sound_dynamic_type" config)
     ?tco_pessimise_builtins:(bool_opt "pessimise_builtins" config)
@@ -654,8 +653,6 @@ let load
   in
   Errors.allowed_fixme_codes_strict :=
     GlobalOptions.allowed_fixme_codes_strict global_opts;
-  Errors.report_pos_from_reason :=
-    TypecheckerOptions.report_pos_from_reason global_opts;
   Errors.code_agnostic_fixme := GlobalOptions.code_agnostic_fixme global_opts;
   ( {
       version;
diff --git a/hphp/hack/src/errors/errors.ml b/hphp/hack/src/errors/errors.ml
index d99dbdca843758..0ff6d4b121a1e8 100644
--- a/hphp/hack/src/errors/errors.ml
+++ b/hphp/hack/src/errors/errors.ml
@@ -556,9 +556,7 @@ let format_summary
     else
       None
 
-let report_pos_from_reason = ref false
-
-let to_string error = User_error.to_string !report_pos_from_reason error
+let to_string error = User_error.to_string error
 
 let log_unexpected error path desc =
   HackEventLogger.invariant_violation_bug
@@ -787,11 +785,6 @@ let try_apply_fixme pos code severity : fixme_outcome =
         Not_fixmed (Some { explanation; fixme_pos })
       else if Relative_path.(is_hhi (prefix (Pos.filename pos))) then
         Fixmed
-      else if !report_pos_from_reason && Pos.get_from_reason pos then
-        let explanation =
-          "You cannot use `HH_FIXME` or `HH_IGNORE_ERROR` comments to suppress an error whose position was derived from reason information"
-        in
-        Not_fixmed (Some { explanation; fixme_pos })
       else if forbidden_decl_fixme then
         let explanation =
           Printf.sprintf
diff --git a/hphp/hack/src/errors/errors.mli b/hphp/hack/src/errors/errors.mli
index 8316ab376020f2..c94e9877d64e38 100644
--- a/hphp/hack/src/errors/errors.mli
+++ b/hphp/hack/src/errors/errors.mli
@@ -62,8 +62,6 @@ val add_error : error -> unit
 (* Error codes that can be suppressed in strict mode with a FIXME based on configuration. *)
 val allowed_fixme_codes_strict : ISet.t ref
 
-val report_pos_from_reason : bool ref
-
 val is_strict_code : int -> bool
 
 val set_allow_errors_in_default_path : bool -> unit
diff --git a/hphp/hack/src/errors/user_error.ml b/hphp/hack/src/errors/user_error.ml
index a4a9167c9d49ef..2754cdb8fcddfc 100644
--- a/hphp/hack/src/errors/user_error.ml
+++ b/hphp/hack/src/errors/user_error.ml
@@ -254,32 +254,24 @@ let error_code_to_string error_code =
       path/to/other/file.php ...
       And this too
   *)
-let to_string
-    report_pos_from_reason { severity; code; claim; reasons; custom_msgs; _ } =
+let to_string { severity; code; claim; reasons; custom_msgs; _ } =
   let buf = Buffer.create 50 in
   let (pos1, msg1) = claim in
   Buffer.add_string
     buf
     begin
       let error_code = error_code_to_string code in
-      let reason_msg =
-        if report_pos_from_reason && Pos.get_from_reason pos1 then
-          " [FROM REASON INFO]"
-        else
-          ""
-      in
       Printf.sprintf
         (* /!\ WARNING!!!!!
            Changing this might break emacs and vim.
            These are not officially supported, but breaking will piss off users.
            Fix Emacs at fbcode/emacs_config/emacs-packages/compile-mode-regexes.el
            Fix Vim at fbcode/shellconfigs/rc_deprecated/vim/plugin/hack.vim, variable hack_errorformat *)
-        "%s: %s\n%s (%s)%s\n"
+        "%s: %s\n%s (%s)\n"
         (Severity.to_all_caps_string severity)
         (Pos.string pos1)
         msg1
         error_code
-        reason_msg
     end;
   let (_ : unit) =
     List.iter reasons ~f:(fun (p, w) ->
diff --git a/hphp/hack/src/errors/user_error.mli b/hphp/hack/src/errors/user_error.mli
index e6e76a71a163a9..8f462ad67a6692 100644
--- a/hphp/hack/src/errors/user_error.mli
+++ b/hphp/hack/src/errors/user_error.mli
@@ -104,7 +104,7 @@ val error_code_to_string : int -> string
       path/to/other/file.php pos...
       And this too
   *)
-val to_string : bool -> (Pos.absolute, Pos.absolute) t -> string
+val to_string : (Pos.absolute, Pos.absolute) t -> string
 
 val to_json :
   human_formatter:(('a Pos.pos, 'a Pos.pos) t -> string) option ->
diff --git a/hphp/hack/src/hh_single_ai.ml b/hphp/hack/src/hh_single_ai.ml
index 1e8adcc6bb8fd3..d508ef126c8f93 100644
--- a/hphp/hack/src/hh_single_ai.ml
+++ b/hphp/hack/src/hh_single_ai.ml
@@ -115,8 +115,6 @@ let parse_options () =
   in
   Errors.allowed_fixme_codes_strict :=
     GlobalOptions.allowed_fixme_codes_strict tcopt;
-  Errors.report_pos_from_reason :=
-    TypecheckerOptions.report_pos_from_reason tcopt;
   ( { files = fns; extra_builtins = !extra_builtins; ai_options; tcopt },
     Ai_options.modify_shared_mem ai_options SharedMem.default_config )
 
diff --git a/hphp/hack/src/hh_single_type_check.ml b/hphp/hack/src/hh_single_type_check.ml
index cf4ad5976382c0..f8c976edf1d3d8 100644
--- a/hphp/hack/src/hh_single_type_check.ml
+++ b/hphp/hack/src/hh_single_type_check.ml
@@ -946,7 +946,6 @@ let parse_options () =
         !disallow_discarded_nullable_awaitables
       ~glean_reponame:!glean_reponame
       ~tco_higher_kinded_types:!enable_higher_kinded_types
-      ~tco_report_pos_from_reason:!report_pos_from_reason
       ~tco_enable_sound_dynamic:true
       ~tco_skip_check_under_dynamic:!skip_check_under_dynamic
       ~tco_global_access_check_enabled:!enable_global_access_check
@@ -975,8 +974,6 @@ let parse_options () =
 
   Errors.allowed_fixme_codes_strict :=
     GlobalOptions.allowed_fixme_codes_strict tcopt;
-  Errors.report_pos_from_reason :=
-    TypecheckerOptions.report_pos_from_reason tcopt;
 
   let tco_experimental_features =
     tcopt.GlobalOptions.tco_experimental_features
diff --git a/hphp/hack/src/options/globalOptions.ml b/hphp/hack/src/options/globalOptions.ml
index ad9c1fe485c334..98acbc14356f58 100644
--- a/hphp/hack/src/options/globalOptions.ml
+++ b/hphp/hack/src/options/globalOptions.ml
@@ -141,7 +141,6 @@ type t = {
   tco_error_php_lambdas: bool;
   tco_disallow_discarded_nullable_awaitables: bool;
   tco_higher_kinded_types: bool;
-  tco_report_pos_from_reason: bool;
   tco_typecheck_sample_rate: float;
   tco_enable_sound_dynamic: bool;
   tco_pessimise_builtins: bool;
@@ -252,7 +251,6 @@ let default =
     tco_error_php_lambdas = false;
     tco_disallow_discarded_nullable_awaitables = false;
     tco_higher_kinded_types = false;
-    tco_report_pos_from_reason = false;
     tco_typecheck_sample_rate = 1.0;
     tco_enable_sound_dynamic = false;
     tco_pessimise_builtins = false;
@@ -361,7 +359,6 @@ let set
     ?tco_error_php_lambdas
     ?tco_disallow_discarded_nullable_awaitables
     ?tco_higher_kinded_types
-    ?tco_report_pos_from_reason
     ?tco_typecheck_sample_rate
     ?tco_enable_sound_dynamic
     ?tco_pessimise_builtins
@@ -555,8 +552,6 @@ let set
         options.tco_disallow_discarded_nullable_awaitables;
     tco_higher_kinded_types =
       setting tco_higher_kinded_types options.tco_higher_kinded_types;
-    tco_report_pos_from_reason =
-      setting tco_report_pos_from_reason options.tco_report_pos_from_reason;
     tco_typecheck_sample_rate =
       setting tco_typecheck_sample_rate options.tco_typecheck_sample_rate;
     tco_enable_sound_dynamic =
diff --git a/hphp/hack/src/options/globalOptions.mli b/hphp/hack/src/options/globalOptions.mli
index 255d65640326e4..391b06376be5b5 100644
--- a/hphp/hack/src/options/globalOptions.mli
+++ b/hphp/hack/src/options/globalOptions.mli
@@ -169,9 +169,6 @@ type t = {
       (** Flag to error on using discarded nullable awaitables *)
   tco_higher_kinded_types: bool;
       (** Controls if higher-kinded types are supported *)
-  tco_report_pos_from_reason: bool;
-      (** If set, then positions derived from reason information are tainted, and primary errors
-         with such positions are flagged *)
   tco_typecheck_sample_rate: float;
       (** Type check this proportion of all files. Default is 1.0.
         DO NOT set to any other value except for testing purposes. *)
@@ -337,7 +334,6 @@ val set :
   ?tco_error_php_lambdas:bool ->
   ?tco_disallow_discarded_nullable_awaitables:bool ->
   ?tco_higher_kinded_types:bool ->
-  ?tco_report_pos_from_reason:bool ->
   ?tco_typecheck_sample_rate:float ->
   ?tco_enable_sound_dynamic:bool ->
   ?tco_pessimise_builtins:bool ->
diff --git a/hphp/hack/src/options/typecheckerOptions.ml b/hphp/hack/src/options/typecheckerOptions.ml
index d4608e482080f9..4d94ca0c7b0a72 100644
--- a/hphp/hack/src/options/typecheckerOptions.ml
+++ b/hphp/hack/src/options/typecheckerOptions.ml
@@ -153,8 +153,6 @@ let is_systemlib t = t.GlobalOptions.po.ParserOptions.is_systemlib
 
 let higher_kinded_types t = t.GlobalOptions.tco_higher_kinded_types
 
-let report_pos_from_reason t = t.GlobalOptions.tco_report_pos_from_reason
-
 let enable_sound_dynamic t = t.GlobalOptions.tco_enable_sound_dynamic
 
 let enable_no_auto_dynamic t = t.GlobalOptions.tco_enable_no_auto_dynamic
diff --git a/hphp/hack/src/oxidized/gen/global_options.rs b/hphp/hack/src/oxidized/gen/global_options.rs
index 3ccdc8944af863..c7659f1a326d8e 100644
--- a/hphp/hack/src/oxidized/gen/global_options.rs
+++ b/hphp/hack/src/oxidized/gen/global_options.rs
@@ -3,7 +3,7 @@
 // This source code is licensed under the MIT license found in the
 // LICENSE file in the "hack" directory of this source tree.
 //
-// @generated SignedSource<<7febc72690d173ffab4606dd14aed244>>
+// @generated SignedSource<<c0812cd2d1206e4b9bc28e4e385e5d01>>
 //
 // To regenerate this file, run:
 //   hphp/hack/src/oxidized_regen.sh
@@ -204,7 +204,6 @@ pub struct GlobalOptions {
     pub tco_error_php_lambdas: bool,
     pub tco_disallow_discarded_nullable_awaitables: bool,
     pub tco_higher_kinded_types: bool,
-    pub tco_report_pos_from_reason: bool,
     pub tco_typecheck_sample_rate: f64,
     pub tco_enable_sound_dynamic: bool,
     pub tco_pessimise_builtins: bool,
diff --git a/hphp/hack/src/oxidized/manual/global_options_impl.rs b/hphp/hack/src/oxidized/manual/global_options_impl.rs
index 673289a5ac5639..86bfb59a661ba6 100644
--- a/hphp/hack/src/oxidized/manual/global_options_impl.rs
+++ b/hphp/hack/src/oxidized/manual/global_options_impl.rs
@@ -92,7 +92,6 @@ impl Default for GlobalOptions {
             symbol_write_reindexed_out: None,
             symbol_write_sym_hash_out: false,
             tco_higher_kinded_types: false,
-            tco_report_pos_from_reason: false,
             tco_typecheck_sample_rate: 1.0,
             tco_enable_sound_dynamic: false,
             tco_pessimise_builtins: false,
diff --git a/hphp/hack/src/package/packageConfig.ml b/hphp/hack/src/package/packageConfig.ml
index 5bce32be507d0a..0b407ac446cf20 100644
--- a/hphp/hack/src/package/packageConfig.ml
+++ b/hphp/hack/src/package/packageConfig.ml
@@ -33,7 +33,6 @@ let parse (package_v2 : bool) (strict : bool) (path : string) =
           in
           User_error.(
             to_string
-              true
               (to_absolute
                  Parsing_error.(
                    to_user_error @@ Package_config_error { pos; msg; reasons }))))
diff --git a/hphp/hack/src/typing/typing_reason.ml b/hphp/hack/src/typing/typing_reason.ml
index 42c7bd8bff68a3..9d330a18410f61 100644
--- a/hphp/hack/src/typing/typing_reason.ml
+++ b/hphp/hack/src/typing/typing_reason.ml
@@ -2196,12 +2196,7 @@ let rec to_json_help : type a. a t_ -> Hh_json.json list -> Hh_json.json list =
 and to_json : type a. a t_ -> Hh_json.json =
  (fun t -> Hh_json.JSON_Array (List.rev @@ to_json_help t []))
 
-let to_pos : type ph. ph t_ -> Pos_or_decl.t =
- fun r ->
-  if !Errors.report_pos_from_reason then
-    Pos_or_decl.set_from_reason (to_raw_pos r)
-  else
-    to_raw_pos r
+let to_pos : type ph. ph t_ -> Pos_or_decl.t = (fun r -> to_raw_pos r)
 
 let rec flow_contains_tyvar = function
   | Flow
diff --git a/hphp/hack/src/utils/hh_config/hh_config.rs b/hphp/hack/src/utils/hh_config/hh_config.rs
index 387e81e169ef3c..4980c7de15b9aa 100644
--- a/hphp/hack/src/utils/hh_config/hh_config.rs
+++ b/hphp/hack/src/utils/hh_config/hh_config.rs
@@ -402,7 +402,6 @@ impl HhConfig {
             tco_disallow_discarded_nullable_awaitables: default
                 .tco_disallow_discarded_nullable_awaitables,
             tco_higher_kinded_types: default.tco_higher_kinded_types,
-            tco_report_pos_from_reason: default.tco_report_pos_from_reason,
             tco_typecheck_sample_rate: hhconfig
                 .get_float_or("typecheck_sample_rate", default.tco_typecheck_sample_rate)?,
             tco_enable_sound_dynamic: hhconfig.get_bool_or(