e621 is currently under fire because the website "e6ai", which I was made aware of a while ago is actually operated by e621 staff. If your art is available on e621, I'd suggest looking into doing takedown requests.

Thread with information is on Bluesky: https://bsky.app/profile/thekoboldking.bsky.social/post/3mz23fg5dek2j

I was made aware of this through another post by Keffotin https://bsky.app/profile/keffotin.girlcock.org/post/3mz2pzyxwhc26

I currently do not see anyone else on fedi posting about this which is why I am doing so right now. If you wish to further discuss this, please do not tag me in the replies/discussions as I do not wish to see arguments about AI.