I think that would work on the immediate effects (i.e. "sexual loneliness") but build confidence and learn to socialize? I doubt that. Sex is the endgame. Before that you've got a whole world of social interaction and skill and skipping to the end wouldn't help you with any of that.

Maybe if the prostitutes were more like escorts, you go out on a date, they give you honest feedback about how you're presenting yourself and so on. But that feels far outside the typical work of a prostitute.