They are incapable of intellectual nuance. People are either good or bad because ifvtheir good or bad thoughts. Like they can't conceive that someone may look at the DPRK and go "Yeah everything about their society isn't ideal, but it is the way it is fir real historical reasons. Largely crimes committed by the usa. And si we probably shouldn't kill them all." Like saying that to one of these people is the equivalent of saying "I support 1984, gulagarchipalago, kill all the queers."