At this point any announcement about "outright banning AI contributions" is a futile exercise in combining "old men yelling at clouds" with a bunch of "virtue signalling" and a lot of "flamewar troll feeding". Nothing constructive will ever come out of any such attempt. And zero enforcement possibilities in the real world. Hence, futile.

Use your energy wisely, don't interact, don't feed the trolls (on either side) and just keep on keeping on.