Payment processors have done this before, pushing anti-sex work censorship. That's why OnlyFans (briefly) was going to ban sex work. (Did ban it? I forget now)
Ana Valens asks you to sign this petition
https://bsky.app/profile/acvalens.net/post/3lupwihoj222f
https://action.aclu.org/petition/mastercard-sex-work-work-end-your-unjust-policy
(it was afterall a small number of ppl who got it to happen in the first place)
There's ideas to contact payment processors too
#itchio announcement https://itch.io/updates/update-on-nsfw-content