"When the shit hits the fan it doesn't distribute equally".

The payment processing system is so complex and opaque even people in the industry rarely understand anything outside their little corner of it.

People are going to be angry at the most visible parts of the ecosystem.

Itch is clearly making the effort and I suspect they will come through with a new processor ultimately. They surely have enough business that processors that handle adult industry will most certainly negotiate beyond their typical rates. Especially considering the nature of the bulk of their business isn't directly adult oriented.