I'm "softer" (lol) on sexwork than most marxists are, and I think it tends to be unfairly demonized, often into SWERF territory.
Of course it's not that simple or black and white, and nobody should be pressured or coerced into sex work, and it is a genuine horrific travesty that many women find themselves in because they need to make end's meet, and this is especially true among women and afab of color.
I've spoken to women who are prostitutes and who are also marxists and are genuinely empowered by their work, and have their own thoughts and perspectives that deserve respect and consideration, though since I do live in the global north/collective west, I can't even imagine how bad things are for women who are forced into it, even after reading about, especially in the global south, and the global north too.
Not that it particularly matters, nor is there likely anyway of measuring the statistics, but I'd be woeful of saying that 99 percent of sexworkers are trafficking victims.
But I don't mean to completely disagree with you, and the percentage is definitely way more than most expect.