OnlyFans convinced many young people who otherwise would not have produced adult content to do so and many of them go on to regret that.
OnlyFans didn't convince anyone, adults make their own informed decisions, it's called free will. Age is irrelevant, we have decided as a society that past a certain age you are allowed to make your own decisions, and that you are responsible for these decisions. Granted, economic pressure is a factor.
Would you extend the same criticism to other things that people regret? For example, are you judging Bluesky or Mastodon harshly because people sometimes post things there that they later regret posting? There have been career-ending posts... Or would you extend the same criticism to a tattoo parlour? Some people regret their tattoos.
Does something make adult content qualitatively different and more serious, beside puritanism? Is it about commodifying the self?