It’s really no one business what someone makes. It’s very personal.
There is no universal moral imperative about that. In Sweden, you can look up anybody's income and profession online for a nominal fee. There is no hiding from it, their society believe it's fair.
Here, you can definitely keep your own income private. Yet if I'm professionally employed, I have no issue pointing to the glassdoor.ca page which shows the salary range for the profession / company. The government also publishes salary reviews per profession.
If we want to have escorting as a recognized legal job, it's not that wrong to talk about costs/benefits of the profession in general.
What seems to piss off people in these threads, a calculation is based on unrealistic assumptions. The whole premise is wrong - maximizing income is not the goal of most girls. They are, and they should worry more about staying sane, enjoying what they do, and not putting the other parts of their lives on hold for years.
I'm sure some escorts work part-time and make less than 10K/year, which does not mean they are doing anything wrong. Unlike other jobs, it is irresponsible to work full-time, or anything close to it if it does not feel right. There's a huge range.
The biggest revenue / year was reported by a local escort who was the most popular at the area, smart, funny, and very business-savvy. You know what? It was not worth it. She lasted a year, and no doubt those insane hours contributed to the resulting substance abuse, probable mental breakdown and whatnot. No amount of money is worth the risk of pushing too hard.