Even with their existing fan base (which might or might not be interested in seeing them less clothed), OnlyFans is not a sustainable income model for most creators:
Statistically most accounts are people signing up, trying it for a couple days half-heartedly, and giving up. You can be morbidly obese, deformed, and geriatric and rake in multiple six figures /year within months if you're going in with an actual agency.
That's actually a lot higher than I was expecting. The average twitch streamer makes essentially nothing.