As if that's the argument against this moralizing bullshit and it's not about criticizing this paternalistic holier-than-thou attitude taken by supposed leftists. Sex work is work, just like any other. And under capitalism, most people are forced (directly, through threats etc.) into it, or coerced into it my their material conditions. If China managed to free some people from it and allowed them to pursue what they wanted, then that's great. But to go from their to claiming sex work is "immoral" or something is something that deserves to be called out. You can say most sex workers are exploited and that the industry is exploitative without being anti-sex work. If you have any actual material arguments for why sex work is "bad" then let's hear it.