OnlyFans is still a pornsite and should comply. Pornhub has the same producer/subscribers model and is doing fine.
Pornhub is, from what I understand, very much not doing fine. For reasons directly related to the same kind of verification issues.
No it doesn't. They "verify" users to upload, but they aren't necessarily verifying every second of content they upload. Which is why the site STILL has copyrighted content (e.g. animated hentai) uploaded.