Hmm. No skill, training, or education may be right, but sex workers need to have certain qualities. The most successful obviously have looks, but also talent for acting and people skills.
Fair analogy. But out society needs the ditch-diggers and assembly line workers, too. Not what I’d want to to with my life, but I think their work deserves at least minimal dignity. It’s not fair to shit on a necessary job.
And yes, if sex work is indeed the world’s oldest profession then it is indeed socially necessary on some level.