@BretDevereaux @dankloke Interesting question. I don't know if there is a plug-in.
I would probably try editing the offending posts and say "This Discussion Is Closed - Future Replies Will Be Deleted and The Poster May Be Blocked" or something like that.
But then I don't have hundreds of comments.
🐦🔗: https://n.respublicae.eu/MaxAndersson/status/1625781516176396288