diff --git a/hive-c0re/src/matrix.rs b/hive-c0re/src/matrix.rs
index 240469d3..7054cf7a 100644
--- a/hive-c0re/src/matrix.rs
+++ b/hive-c0re/src/matrix.rs
@@ -888,16 +888,10 @@ pub async fn ensure_admin_user(client: &reqwest::Client, register_token: &str) -
 /// (`#admins:<server>`). Sends `!admin users make-user-admin @<localpart>:<server>` as
 /// @hive, polls for the bot's "Done:" success response.
 ///
-/// Historically justified by tuwunel 1.6.x not implementing
-/// `/_synapse/admin/v2/users` — but this repo now deploys 1.8.3, and that
-/// premise has not been re-verified against it. A binary grep of a deployed
-/// 1.8.3 found the route string present, which is evidence but not proof (a
-/// string match doesn't confirm the route is actually served to an admin
-/// token, as opposed to rejected, an error message, or a client-side
-/// constant). Whether the admin-room polling mechanism here can be replaced
-/// with a direct HTTP call is an open question tracked on the forge,
-/// pending an actual authenticated request against a running homeserver —
-/// leaving the mechanism as-is until that's answered.
+/// Workaround for a once-missing `/_synapse/admin/v2/users` in tuwunel —
+/// not re-verified against the version currently deployed. Whether the
+/// admin-room polling here can become a direct HTTP call is an open
+/// question tracked on the forge.
 pub async fn promote_user_to_admin(
     client: &reqwest::Client,
     admin_token: &str,