Consider the sex workers who deal with mentally or physically disabled adults. Most people have sexual urges, and those who are unable to participate in society in the usual way of addressing their urges with a romantic partner or a one-night stand still have them. There are a good number of very professional sex workers out there who can provide these people with sex (often with specific expertise for the relevant handicaps) and generally significantly improve the wellbeing.
Are those sex workers doing something they shouldn't be doing?
Think honestly about what this means for your view on this.
In all of those cases I would council her to the best of my abilities on safety and long-term planning, if she'd let me. And of course, as any parent, I would worry about her safety. But hey, I'd worry if she went paragliding or mountain climbing too.
Honestly, I would be more disappointed if she became a lawyer in the pocket of, say, Amazon or AirBnB. Or a politician for some extreme right political party.
Would I be happy if she was a sex worker in some seedy part of town with a pimp hovering over her? Of course not. But that is not dismissive of sex work as such, rather of exploitation and coercion. All of the examples above avoid that.
Think honestly about it. Do you think I have anything against sanitation employees?
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 fact that you think profession B > A only reinforces my point and shows, precisely, that GP's argument does not work.
You are asking a binary question for which there isn't a binary answer. Better to ask are those sex workers doing something they will get a pat on their backs for from other members of society? In a way a builder, chef, firefighter, and even a prison guard would.
Why? Especially compared to e.g. advertising/marketing? At least in the former case, all parties to the transaction are there voluntarily, for an honest, mutually beneficial exchange of value.
Would you rather be flipping burgers all day for 30k or would you rather take a few nudes every week and make 300k?
OF is like the wet dream of a drug dealer or whoever else with a baby momma and some kind of scam/fraud/counterfeit operation.
degrading: no. I've met prostitutes who very much like their work and find it empowering
dangerous: ...yes, because it's illegal and they don't have access to proper legal protection.
It is called delusion
It's, of course, much better and far less delusional, to go flipping burgers for $30k which barely covers your housing, less alone food.
Or to go to the military to lose an arm and a leg, defending a just cause, of course.
Some cultural norms are outdated, but prostitution is still degrading and dangerous for those practicing it, especially for the women; who may not be doing so willingly, prostitution being the main incentive for human trafficking. And the online medium doesn't change that by much.
Some people may be willing to pay for sex, some people are willing to pay for many other things or activities that should be or are illegal.