I have no comment on the morals and ethics but as far as modern technology goes; most if not all of OnlyFans finds its way to darkweb | pirate | hoarder megasites where there's always a few because-we-can obsessed techlords training facial recognition, gait recognition, and seeding AI generated VR porn engines, etc.
We can be certain that any woman with an OnlyFans portfolio will face that being dragged up later in their life if they are at all slightly public.
They do have the modern available hand wave explaination of "deepfake by weird ex" that becomes more and more believable each passing day.