You think the existence tribal leaders, elders, priests and alpha males/females are "doctrine"? Because I'm pretty sure those are factual observations. Maybe you mean to argue they are not necessary or always present in humans or apes. Fine, present evidence this is so and the frequency of such exceptions.
Presidents, popes, and dictators-for-life exist, too. That does not mean that every organized group of people needs one. If you want examples, read the book. It is right there.
But what does a doctrine widely taught have anything to do with whether it's true or false? Clearly you think it's false but do you have evidence? Please present evidence if you do. Examples in biology, similar species or specific civilizations function as good evidence.