Know what'd be cool?
An ActivityPub verb that requests opt-out from thread tagging. An instance that receives it would show a toast/pop while some writes a reply to such a thread, that firstname.lastname@example.org would like to be untagged, with a single click to do so.
A silly domain for test deploys, now has a mastodon instance. A place for memes as shitty as the name. Zero bullshit tolerated.