I wish I had something more clever to comment on it. I know what they’re doing which is cool and why which is, IDK, live and let live and enjoy your own kink. It just a little funny some of the most work put into in the fine tuning models.. is from the pony community.
It's not just them. For example, 4chan is a surprisingly good way to get the most recent scoop on good models (both text and images), setup guides etc - if you can tolerate the inevitable, well, 4chan-ness of it. And the reason is exactly the same: a lot of people there really, really, really, want to generate porn and to chat with sexbots, and they're putting a lot of effort into getting the best (and least censored) results out of the resources that they have.
Apparently most stuff that relies on the weights being resonably similar to SDXL don't work - control nets, LORAs, commonly-used inpainting patches, the lot. It seems to go well beyond fine tuning and be substantially retrained to the point it's a good chunk of the way to being a different model entirely, and the amount of training time is on the order of what went into SDXL originally too from what I can tell.
