I read on HN a few days ago that they use stripe for non sex related models, and ccbill for adult related models. Ccbill is the porn industry’s payment processor but it costs much more.

Ah, wasn't aware. One of my contract positions right now is in a sex worker field and a lot of the infrastructure and billing needs to be done themselves.

In some other HN thread it was explained that they use multiple CC processors, and only use Stripe on the non forbidden by Stripe stuff.