I think that's because most people are taught (and believe) that if you do bad stuff in life then bad things will happen to you. Most people (even probably the majority of those that engage in it) think that doing porn and prostituting yourself is wrong. So most people probably don't think good things are gonna happen to the people that do it. Even Dr. King said that the moral arc of the universe bends towards justice, or something to that effect, so when people see someone do something they consider bad and there aren't any readily apparent negative consequences, it probably does trigger some folk's moral outrage. And let's be honest, a lot of these hoes do end up in a bad way. Dead, prison, dope fiends, etc. I have seen way more sob stories than I have success stories when it comes to porn chicks. So for those that do seemingly "beat the system" so to speak, unfortunately there are some people out there who won't be happy about that. And to be honest there are probably other porn chicks who didn't come out of the game intact that feel that way about the chicks that did turn out okay too. A lot of that is just being human.
What was always interesting to me was who makes it out okay and who doesn't. I never thought Angel Cummings would've ended up homeless, strung out, and disease ridden only to die by her early 30s. Outwardly she seemed to have potential for more than sucking dicks for a living. On the other hand I have been genuinely surprised by some of these other chicks who've gotten wifed up, become doctors, nurses, etc., and otherwise appear to be living their best lives. I think that's part of why folks like to find out what these chicks are up to after they leave the game. Because life is funny man. You never really know what you're gonna get.