First of all, it is weaselly. It is saying that "there is a counterargument" without actually making it.
Then, it sort of vaguely draws the conclusion that because there are instances of lying related to human trafficking in the world, the whole concept of human trafficking is a lie. That's like taking the case of a false rape claim and encouraging everyone to understand that women lie about rape.
It's trying to sneak away imagery of pain and powerlessness, for selfish interests. How dare these people intrude on the lives of others and act as if they know what's better, stealing hundreds of millions of dollars a year.
You want to know how to make money? Go into business spitting liberal epithets and get funded by UN, governments and NPO's. These guys are frauds that need to be exposed. They distract us from the real victims.