And let's be frank here. OF is probably a viable financial opportunity - on average - for a small number of more attractive that normal people, and it's probably weighted towards younger women. I'd love to have hard data to present to you, but I can't find it.
I have literally zero problem with people who want to use OF to support themselves. However, let's agree 1) that some people for whom it would be a viable financial option find it objectionable and 2) it's a less viable financial option for some, even if they don't find it objectionable.
I think that groups 1 & 2 in there should still be able to work a 40 hour job and pay for food and rent, and still be able to save something to retire if they want to. And they probably should fear starving or dying of exposure even if they don't have a job.
Call it unrealistic, but I prefer to fix that problem, too.