And of course, there’s the fact that someone leaked the group’s internal Twitter messages to Buzzfeed – backstabbing the backstabbers.
It’s in their nature. The further right one goes, the more everything in life is seen as a zero-sum game.
ETA: right-leaning Libertarians just don’t seem to be satisfied with a transaction unless one party ends up on top and the other gets screwed, and as a result of that they recursively turn on their allies and comrades the moment the moment they’ve won a battle against a common enemy (sometimes before). Fascist thugs and right-wingers in general tend toward this thinking, too.