Authors dealing with this trope have two negative audience reactions to defend against or ignore. These two positions are very different from each other in some ways, but they both agree that it's dangerous to portray a sex worker in a positive way because you run the risk of Do Not Do This Cool Thing. One position is about seeing sex workers as victims, thus despising the trope Disposable Sex Worker even more than this one. The other position is about seeing sex workers as immoral, thus tending to see the other trope as a valuable aesop instead.