Bad comparison.

Public sanitation workers keep our society functioning, they're a cornerstone of civilization.

Online prostitution, on the other hand, ranges from providing 0 value, to extreme negative consequences, such as the current porn addiction epidemic, or the loneliness epidemic.

The GP, trying to show how 'bad' profession A was, was making the argument that the average HN reader would look badly on his progeny participating in profession A. I simply made the argument that the average HN reader would also look badly on his progeny doing profession B. Obviously, my point is not to throw shit on profession B but rather show that GP's argument simply does not work.

The fact that you think profession B > A only reinforces my point and shows, precisely, that GP's argument does not work.

Your moral compass is truly fucked. One makes a mess of their own life and contributes to making a mess of many other lives. The other cleans up messes.