OnlyFans won't "do anything about this" until they have to.
Remember a couple years ago, first time they tightened up their TOS? Started regulating certain types of content, right? Girls were getting pissed off and some moved to Fansly b/c they could do the stuff that they got popular for.
IIRC, I believe I heard that all happened because one or more of the credit card, or payment, providers threatened not to service OF. Didn't want the association.
This is what makes them change their business, when there's either a threat of lost income, or increased oversight or regulation. God forbid Congress says "let's look at what's going on here."
Side note: I'm Canadian. The way it works up here is that sex work is not, in itself, against the law. Prostitution is actually legal. But our law is that no one other than the provider is allowed to profit from it. No pimping, no side businesses like security or drivers... or "agencies". I highly suspect this would be illegal in Canada if someone went after it.