Especially the early ones where he just seems to be making shit up on the fly and taking really long pauses to think about a good answer. Then again, maybe that makes him more relatable to the average person?
I know some real narcissists, and I think there's a moment before their narcissism is confirm-able that their "power" has more currency than it will later. I guess we can call it "charisma", but once it turns... it can feel rancid. I guess for some people, that rancid-ness doesn't show up.