They certainly are content creators. Not really a fan of porn streams though. Prostitution is legal in my country but I wouldn't want to visit one. It is a large industry but it isn't ubiquitous because of legality.

So porn models would probably be a thing even if all payment providers stopped their service for porn. It would just be completely counter productive since this form of sex work is probably as safe as it can be. And any life style decision shouldn't be dependent on payment processors.