A clip from this livestream: youtube.com/live/Q6c3pXG62K4
It's often said that hierarchy is necessary because humans are selfish and greedy. But is that really the case? Hierarchy creates a system where the worst actors are given the easiest path to power.
Observation of the social dynamics described in the links above as they apply to any social group anywhere.
Humans are Apes. Every troop of Apes has a leader, and further stratification below that. Humans are no different. If there isn't a structure (deference to elders, to the smartest, etc) pushing for a different outcome, the dominant ape in a human troop is generally the most charismatic individual, with the strata below that generally determined by similarity or proximity to the leader. In any group larger than a handful, the most charismatic will almost certainly be Neurotypical.