Instead of adding "+Merit" when you like a post, you'll add "AI-Slop-Merit" if you think it is AI-slop.
Users with too many "AI-Slop-Merit" in the latest X days, get their signature banned until the oldest AI-Slop-Merit expires.
Have you thought about the abuse potential of this? Who controls that AI-slop marker points, I'm not willing to call it "merit", are given in a justified manner? Think of competitors who didn't make it into a campaign may start to bully some that are in a campaign. Or have other grudge and feud with each other.
I'd rather prefer an AI policy in this forum where AI generated or even aided content should be clearly labeled and quoted as such. Then anybody else can decide if they want to bother to spend time and read such content or not. This should be mandatory, regardless of the "quality" of the content and treated the same as proper quoting of your sources if you copy/paste content to avoid being punished for plagiarism. I'd be fine with progressive temporary bans (maybe after initial warning?) and prolongued signature bans especially for AI abusing campaigners, stubborn repeaters deserve a permaban.
Worthless AI slop in particular is a waste of time and an insult to intelligence and personality. I don't care if the AI shill-boyz are so fond and happy about this "new technology" that they can't stop wanking their willi over it (for a moment this topic seemed to be derailed a bit with how awesome AI is, well, you do your own judgement).