Non Swing Voter comes to mind.
Strong disagreement =/= worst poster.
It isn't so much about how them disagreeing with people, its how they completely lack the ability to construct arguments, do not take criticism well whatsoever, and think that they can dismiss other folks evidence by calling them trolls.
Smoltchanov is awful if we're going by that criteria. Sure he is a bit more articulate than some, but "extremist" is essentially his version of dismissing an argument by going "troll." Another favorite of his is to say to people who disagree with him some version of "plenty of people say I'm really smart; I'm far smarter than you and since you aren't going to change my mind, there's no point continuing this conversation."