I remember reading a post somewhere on the threadiverse that contained a list of all websites one AI crawler was using for training, there were several Lemmy instances on it. It would even be possible to set up an instance only to crawl it.

You might want to post something publicly, but conceal who you are. Tor can help with that.

Much of AI training happens on the entire public web, including here.

Why was it previously allowed, one may ask.