If you ban it. It feeds until the delusion that they're persecuted.
I think the right move is always allowing it, but requiring a tag [ai] so it's obvious.
If people don't like it, they can down vote it. Or block accounts that always post it.
If the people posting it don't want down votes, they can post to one of many explicitly pro-ai coms where mods ban people for down voting.
The only issue may be the ai fans are probably going to build bots to upvote anything tagged as AI. They tend to be weird and really care about votes.