Surprisingly a lot of clauses in EULAS are and get “stricken” (even though this one still stands).

As in: we [users in general] almost never tag the content of our messages by language

May I ask how one would go about doing that? I know it’s a feature of the protocol, but it seems to be inaccessible to me on my client of choice (Jerboa). The vanilla web UI seems to have even less feature accessibility