Some 15 years ago, I interviewed at a payment processor that specialized in NFSW customers and pretty much the fraud/chargeback rate is ridiculously high for porn sites and the like. Elsewhere in the thread someone commented about even vigilant customers getting kicked off stripe, but I’m guessing that even with vigilance, the fraud/chargeback rate will be much higher than an acceptable threshold. There’s a limit to what you can do. When I was taking credit cards in the 90s, I managed to have an almost perfect record (the advantage of selling print subscriptions where a stable delivery address is needed), but got burned by a purchase with a stolen card where they bought a number of back issues plus a 2-year subscription and had it all sent to Hungary.