Yes and no, sir. You are correct in implicitly stating that the internet would have to BE controlled in order for the death of trolls to occur. As many have previously ruminated, the very essence of anonymity grants trolls the ability to be trolls safely, and with no consequences. The article predicts the Inevitable Death of Trolls because the american society has already put to death similar grievances (or attempted to), such as sexual harassment in the workplace. However, the article does not theorize HOW we could put an end to trolls. I believe, as science fiction has put forth (Ender's Game is a good example) that a citizen's net, without anonymity, or with tiered anonymity tied to the granting and restriction of powers, is the only way.
I also believe that it will never happen, because we don't want to allow that degree of restriction on our freedoms. I also don't hold that any such control is constitutional, at least in America.