Just because something makes you money, doesn't mean it is work. Taking off your shirt isn't work. Getting on your knees and sucking a guy off on the other hand, is work. Masturbating on camera isn't work. If i get home from work and decide to jack off, i don't consider it a second shift.
Yes this is the same logic people use with artists: "You're drawing for fun anyway, why should i pay you to have fun?"
Some jobs may or may not be more demanding than others, but that doesn't really disquilify them from being "real jobs".
Selling drinks at a bar isn't even remotely as hard as working your shift at the local coal mine, but you wouldn't laugh at a barman's face going "you think this is a job"?
Sure. Doesn't mean I have to have any respect for the way you make your living though.
Admiration? Yeah that's up to you.
Respect as human beings trying to make a living however they can, in an already very difficult economic situation? Yes, it does.
There are plenty of jobs that require little to no skill, and have even less career potential than being a Chaturbate hoe, say, cleaning up vomit as a janitor at the local school.
If you think that also doesn't "deserve respect", i don't know what to tell you.
If you can make a living without hurting others in the process (also not a given) you deserve a basic amount of dignity and respect.
Door to door salesmen targeting old people to sell their dogshit deserve less respect than someone showing their tits for money.