So fun fact, these websites that are controlling what NSFW folks MIGHT do off-platform would not do anything about a person who was using their platform to continue stalking and harassing me, because a majority of his stalking had previously happened off-platform. Food for thought!
The TOS being so strict that they control you offsite is the problem; sites like Patreon and Kofi have offsite clauses too. The social criminalization of the suggestion that somewhere you might be doing nsfw is a problem. It's branding a person as obscene and we need consumers to stand up for us