The three are not exclusive to each other. All three add volume. Porn needs volume. Quality is what the user like, which like porn tastes are diverse.
I think you’re deluding yourself on that issue.
I have fairly mainstream tastes and I have a large collection of various pictures. As an experiment I picked a number of those pictures, based around various themes and posted them. I’ve been quite successful in terms of upvotes as a result. However the more interesting thing for me is what happened today when I had run out of that initial selection.
Yesterday I didn’t post any pictures and as a result a number of other users posted a wider selection of content than had been available while my posts were doing well. I want to share content with other users that share my preferences but I don’t want to be part of the problem for niche communities or for original content creators who only have a small audience and probably never will appeal to the mainstream.
The Only Fans people seem to be riding high and that’s good, we don’t need to worry about them getting flooded out.
But there may be creators who have a natural audience of maybe no more than twenty and it’d be nice for them to be able to have those twenty upvotes without there being immediately five downvotes that will knock them very quickly off the active page and some shitty comment about how they are not… I dunno, whatever ugly thing people think of to say.