This type of "harassment' is actually what has made these same payment processors backtrack in the past, when they tried to remove sexual content from Only Fans, and at the advent of VHS tapes when a group of religious people attempted to keep pornographic material on VHS out of stores. These people at the time referenced a 1970s movie Caligula, which was basically the movie equivalent of 'no escape' or whatever the rape game they're using now is, as well as an Atari 2600 game called "Custer's Revenge," which wasn't merely a rape game, but also featured racist abuse of Native Americans.
And briefly, Bank of America (who owned Visa back then, that changed in 2008) listened. Suddenly video stores had to close that section or lose the ability to process cards.
Until the fap army was organized by a comedy magazine - specifically, National Lampoon, which once wasn't just a shitty movie mill, but was instead Ivy League mad magazine.
You know what they said? They said "just write a letter to Visa."
They got half a million letters written to Visa saying "dude I'll stop using your card."
It got so bad that the retail company Sears (a large company at the time) decided it was an opportunity, and they started Discover card. A lot of people forget this now, but Discover card's original reason to exist was "we're not going to tell you how to shop. If it's legal, we'll transact it."
Complaining in all forms helps. We have to scare these companies (like Visa) worse than Collective Shout did. They won't try to save 40,000 customers at the expense of two hundred thousand.