Looking around I don't think the AI slop/spam is going to stop or get better on it's own. Given the trajectories here it may well get worse quickly.
How about requiring anyone who posts maintain a valid payment method and if they post "spam" it would be up to the moderators, or aaided by regular members, to leavy a fine.
Like I said, this won't stop by itself.
I do think some posts are by folks trying to get a leg up on programming. Can they be "special" in some way so others could give them help as they can?