"Seemed" being the operative word. I just thought he got nervous about growing so big so fast on the platform. There's also people that just like a fresh start. By starting "clean" you have a better idea of what you're putting out. You also shake off a lot of excess people. I don't follow the guy. I just check in with this thread occasionally. That's how I found out about him.
Selling your photos on onlyfans comes with another set of issues the guy may not want to deal with like taxes and expectations of posting consistently to not anger people. Onlyfans is a job. There's also quite a few people that just like to post what they post and go. (There's also a few people that morally object to it and just like the attention without charging people.) However, if he's posting them on his twitter and his tumblr they're originating with him and he can remove them whenever he wants since he maintains some control.
On the filpside there are people that have found these threads like him and have more than welcomed the attention (as long as the photos are ones that they've shared publicly.) It's hard to know how someone feels until this happens.
Do I think it's all very silly? Kinda. I'm not arguing with that. I'm just saying, I get what he's doing.