Seeing how Steam sells adult games and relaxed on AI, and Patreon has a lot of adult games as well, I would not worry too much.
But an alternative payment processor that has some indie vibes would be nice. Intermediate companies overimposing their own agenda and world views on things are bad. The underlying banks and credit card companies have no qualms with all this "controversial" stuff. If it legal you can pay for it. Or how do people think all those actual adult content creators make money? Do people think that those cam girls get cash per snail mail? The problem is the microtransactions. Paying three dollars for a game with a service that gobbles up more than that three dollars for a transaction is just not doable. Main reason why things like bitcoin are never gonna work.