I really don't think it was ever the banks, there's been no issues with similar sites recently and there's been nothing to suggest that they weren't already in compliance with their policies. It also seems easier to me to find alternative banking platforms who are less fussy about SW than to essentially tell your main sources of income to go fuck themselves.
Like not only is infuriating, it makes zero sense from a business standpoint. There is a ton of potential for OnlyFans to make business choices that go in the exact opposite of where it's currently headed. There are SW friendly platforms they could partner with that would give them more autonomy as far as policies go, which would make them more attractive to creators and net them even more money. But they have made zero moves in anything even resembling that direction.
It really doesn't seem like they are interested at all at succeeding as an adult friendly platform and that they are hellbent on this lukewarm idea of being a PG-13 site for SFW influencers. They will never be able to compete with Patreon, ko-fi or any of the other SFW creator platforms but they keep acting like they already are instead of just living with the fact that they're a porn site now and embracing it because it made them all rich.