There is zero reason to come up with an alt/shit coin for this. Accept payments using a popular crypto-currency and link your customers to reputable exchanges they can purchase the currency at.
FWIW, most of these were low-effort projects with silly names which were either jokes or pump-and-dump schemes. As far as I'm aware, none of them have made any meaningful inroads into the adult content industry.
Wow, this is really bad for crypto. Even though they can circumvent VISA technically with coins, OnlyFans doesn't want to go down that path. Probably because it immediately becomes partially funded by money laundering or sex trafficking, and they get shutdown eventually
there are already a few competitors, and afaik pornhub cleaned up its content in order to follow that model. If they are registered to hands-off countries they ll probably steal OF's thunder overnight.