I just spent a while today deleting all my posts and comments. At this point they'll probably have plenty of copies of it, but at least the content is not up for them anymore.
Just trying to see if I can survive without an account there (the "forum fediverse", if that makes sense, is getting better and better) and then it'll go to the same place my Twitter and Facebook handles went a while ago.
Yes, these things are never dead. They just come back under a different name / pretensions until they pass.