I've noticed a pretty glaring trend of OC posters creating an account, posting for a few days, and then disappearing never to be seen again. Posting studio and model content found on the corners of the internet is fine, but in the end it doesn't actually drive much engagement, which is essentially the primary purpose of a link aggregator site. The primary content people engage on are going to be things that a person has taken the time to create themselves or something with a clear gimmick, like the ifyouhadtopickone or kink communities.
Personally, I'd say that the reason we're seeing people drop off the site shortly after joining is because of the overall community at large. When anyone from the Fediverse can just drop in on a whim and comment something disparaging to someone who went out of their way to post themselves it really doesn't feel great. Combine that with the fact that if you're not a professional model or Onlyfans producer, you'll be downvoted pretty heavily even with the rules changes in place.
I try my best to go out of my way to comment on anything I reasonably can and I don't know if I can place exactly why, but the instance feels both simultaneously hostile to post and to comment/engage in at the same time.