When your company is at risk of being essentially forcefully dissolved, you're gonna be desperate. I was fully expecting them to tell Visa to fuck off and just switch to a different payment processor, because that's more economically viable than complying with Visa.
Maybe they threatened Visa with legal action and Visa felt that it was too risky, lest they lose their entire censorship operation. Just speculation.
It makes no sense. They're a Fortune 500 company. They don't give a shit about the morality of nudie magazines.
They previously were banned (or maybe it was threatened to be banned) by the payment processors, then suddenly it went away.
OnlyFans has an insane amount of rules about what's allowed or not. And suspends and bans performers left and right for the slightest BS complaint (apparently usually from a competitor to that performer). That's how it panned out.
That must not be comfortable for OF because this is the kind of insanity that will make every performer keep looking for plausible alternate intermediaries so as to ditch OF. OF makes it because they are by far the largest source of traffic for performers.
It's either that or shady backroom deals with Visa.