You could say something 100 times to Piers and he would simply ignore it and refute it with an irrelevant fact that does not address yours. It's simple passive aggression, and to most it make the passive aggressor seem to be "civilized" while the other becomes legitimately irritated at being ignored and condescended to. Neither Jamie Bartlett of the Huffington Post nor Piers have done anywhere near as much research of all side of the issues as Alex, so in both cases, debating him would be like bringing a knife to a gunfight.
I am sure many people will assume that calm equals correct, but everyone can identify with Alex' frustration, before he even arrived, with Piers incessant irrelevance. People have got to actually listen to each other, and address logic with logic, or they can fully expect anger.