Yeah I know it applies to all leaders of nation states on a modern scale.

I'm just replying to the animal-brain part and saying it's monkey brain that says "no likey" to being ordered around by someone who hasn't proven themselves to you. Whether by social power and garnering enough support amongst your peers, or just beating the shit out of whoever disagrees. At least with the elected leader there's the illusion of proven social power for the individual in question to fool the midwits.