Concerning the removal of NSFW content from content creator platforms such as Itch.IO, Steam, and other platforms containing authors expressing themselves:
Capitulating to the credit card companies over sexual content is worse than banning books from a library for it's content. Fictional works are just that, fictional. Banning it's content base on someone else's conservative views is simply puritanical. It's an infringement on the rights of the authors to express themselves as individuals. In the U.S. it is an infringement of the 1st Amendment.
It would be ok to make safeguards that make security tight around the sales of such content, so that age verification, and rights waivers can be verified before payment is made, but outright banning the content is wrong. Shame on any platform that capitulates to the payment processors in this regard. Shame on the payment processors for capitulating to a single campaign of 70000 people who don't necessarily speak for the other 7 Billion people on the planet.