I think the main problem with that article is the idea that making it illegal/making it disappear overnight would solve any of those problems. It wouldn't. (1) It would give people with few options fewer option, (2) those women would be even more economically disadvantaged [and he ignored disabled and trans women who do make a large percentage as well], (3) most major industries these days are built upon and extort through colonialism, genocide, femicide, white supremacy, patriarchy, racism, and classism or any other part of the kyriarchy, which is why (4) male voices like the blog post's writer get more air time to discuss and prioritise what they see as the issues within any industry, [and why women sex workers, particularly those in the categories discussed, get the least amount of voice in the conversation], and (5) eliminating prostitution wouldn't teach anyone more respect for women and wouldn't make people in other sex industries better (and this part ignores that in many parts of the global sex trade, women are the main buyers and this is interlinked with racism, classism, and exotification of men of colour in representation).
The reasons to get rid of prostitution could be said of many modern industries (yes, down to rape and death) and is putting the cart before the horse. We need to fight (and eat) kyriarchy in all it's forms, take apart and build new systems, give real opportunities and equality to the groups discussed because without that we'd just be making them more vulnerable. If the studies say they would leave if they could that pretty much means that there are no options so what good is taking only one away without doing anything else first? It's just cart before horse and rather paternalistic and exuding privilege to think if we top down took that away that people would make 'better' choices and think better without getting real input and putting anything in place.