"People who see prostitution as something which exists on a number of different, exclusive and distinct class-related levels are people who do not understand the interrelated nature of it, and some of the people ignorant of the shifting nature of prostitution are actually prostitutes and prostitutors themselves."

Sounds awful paternalistic. Have you considered the possibility that people who make choices you disagree with have agency?

Once again, if only for the peanut gallery: you are asserting that no sex workers have agency in the matter of their employment. Yes or no?