With traditional adult entertainment, creators are aware of the social ramifications (e.g., social stigma, familial ostracism, difficulty dealing with the future, and so on), and there is a decent theoretical economic framework to measure that.
I am not sure if there's the same this new army of "civilians" joining OF, let alone the additional toll it will take on the creators in terms of social ostracism, future prospects, future opportunities, and mental health.
How is that 'fine'?
I would like to see a future where someone doing sex work to make ends meet (or even as a freely chosen profession!) is not ostracised for it. Sex is part of society whether you want it or not, and so is paying for sexual acts.
When it becomes fine, it will be worth no more than someone coming to mow your lawn, and probably less than that.
EDIT: brace for the lawn mowing cartels led by ex human trafficking gangs. On a more serious note, there is so much criminality involved in that field precisely because it's illegal and lucrative. You remove that and you remove a lot of abuse.