Okay, this kinda of crap makes me angry, just angry. Go read the article. Do you see what's wrong with it? I see no distinction between legal prostitution and illegal prostitution. Now let's look at the difference between legal and illegal drugs. The first you can buy in any store (everybody sells aspirin), in controlled doses with brand names and labels. The police aren't involved, violence isn't involved, it's all up front and everybody knows what they're getting into when they start selling legal drugs.
So by the principles expressed in this article, because illegal drugs are risky, then, too, are legal drugs. Defending legal drugs clearly says nothing about illegal drugs, and yet the article does not distinguish between legal and illegal prostitution. The two situations are very similar in that the illegality is the CAUSE of the problems that make people want it to be illegal! Circular cause and effect! The solution causes the problem. You see this kind of reasoning everywhere. "Oh, oh, poor people don't earn enough money, so we will help them by forcing a minimum wage." and yet that destroys the employment of anyone whose productivity does not justify paying them the minimum wage.
This is NOT to justify any of the horrible activities described in the article. They ARE horrible, and they ARE horrors. But I suggest that all of them are caused by the illegality of prositution, and I encourage anyone worried by the article to examine the operation of legal prostitution.