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.
Some cultural norms are outdated, but prostitution is still degrading and dangerous for those practicing it, especially for the women; who may not be doing so willingly, prostitution being the main incentive for human trafficking. And the online medium doesn't change that by much.
Some people may be willing to pay for sex, some people are willing to pay for many other things or activities that should be or are illegal.
Would you rather be flipping burgers all day for 30k or would you rather take a few nudes every week and make 300k?