They're basically programmed drones. It is very strange how they can't actually comprehend reality other than the one that was created for them through programming. I do believe this one was actually short circuiting in a way and blanked out. Remember, their coping mechanism is violent reactions. When confronted with a narrative that absolutely counters there's they go into a self protection mode which is violance. But in this case this one literally froze up.

Exactly, she exposed her "hand" or argument up front then asked where his borders were. The fact that he then defined the borders showed how clueless this idiot was. If he had half a brain he would have caught her point with the first question and countered or clammed up at that moment. Hook line and sinker