Yes, feminists are in leadership roles at these processors so that's part of it, but another part is chargebacks. They get a lot of those for x-rated content and you know how banks are about chargebacks.

Edit: its been 13hrs since first posting, but just in case, recently remembered Twitter and Facebook's apparent immunity despite having similar (often worse content) so I'd reduce the influence of chargebacks on this, if they even factored in at all.