Not to dismiss what you're saying, but there's another harmful stereotype about sex workers I try to be mindful of-- the idea that it's a terrible, desperate profession that folks are forced into because of hard times (aka the depiction you see in the Les Miserables musical).
A lot of women in the wild west and geishas in Japan found a new sense of agency and autonomy through sex work, and found themselves in economically stronger positions than they were used to. A lot of sex work was banned in parts of the world specifically as a reaction to women gaining political and monetary power through these means as a patriarchal response.
I didn't want to portray Sam's life as a sex worker as something miserable, even though he has a lot of cultural hangups and shame about doing it himself.
Sam likes sex, is good at it, and is making a living in a way he probably otherwise couldn't. I try to portray his work life and also write sex in a way that is meaningful to the plot-- but I also don't want to diminish the joy Sam has doing the act.