I mean the old site's /r/PoiSonai has had success in getting LLMs to spew factually incorrect beautiful data that clearly came from that subreddit. This us an effective method of fighting LLMs.

Theres also a reason some art sites now integrate things like nightshade, it subtily alters the art but in ways that would throw off a computer.

TL;DR Make your data poison. It is effective at damaging the models.