Sex trafficking is filthy work. Your fantasy that whores in Austria don't do coke is something, but aside from that, the problem with prostitution isn't that the women involved all do drugs, or are all rape victims, or are all exploited - as OnlyFans shows, plenty of women want to monetize their sexuality and do it freely when given the opportunity. The problem with prostitution is all women who participate it in it are whores, and all men who solicit their services are johns. We shouldn't legitimize the idea that it's okay for a woman to use her vagina as an ATM, or that it's okay for a man to pay a woman for sex. You push things to the margins of society that you don't want as part of your society, so you minimize participation in it.
Like, back on topic, trannies. Back when trannies were marginalized, no suburban woman would have dared do to her son what Jazz Jenning's mom did to him. You had far, far, far fewer people overall trooning out. If you did troon out, your life was basically over, and you were going to go live in the red light district until you died of STDs or an overdose or suicide. I think this was overall good for society, same as I think pushing prostitution into the underground is. Keep it in the ghettos and dark corners of the internet, not sold via a quirky smartphone app.