Visa/MasterCard porn ban was driven by American extremist Christian organisation called Exodus Cry, which is also anti-gay, etc.

https://screenshot-media.com/politics/human-rights/pornhub-p...

Exodus Cry leader was later fired for sexual misconduct

https://www.rollingstone.com/culture/culture-commentary/anti...

Trump changed banking regulations so that "reputation" can no longer be a reason for banks to "derisk" customers after crypto industry outcry, but the reason to exit customers must be factual money laundering or similar reason. But the change does concern cards, as payments are not under FDIC surveillance.