Unfortunately the Celeb forum became the Celeb and model forum because of the proliferation of IG and OF posts. Some of them actually have content, but they are the rarity. A lot of them,though, are just a bunch of thirsty queens bumping threads and making the same tired comments over and over again.
It's a pain, but if you find a thread you are actually interested in, not just a FotW, then just follow the thread or post a comment or something in it so you will get notifications. Then just skim through the rest of the pages seeing if something might interest you.
Personally, I think OF (and IG in some cases) is one of the worst things to happen to social media.
Also, you can complain all you like, but all you are going to get is blow back from the aforementioned queens telling you off. Best thing to do is just pay them no mind and find what you want to look at.