We evolved to over-value our close tribal connections because those were the most beneficial to spreading our genes.

Well, I guess, since the pre-human Australopithecines three million years ago until these blockchain days. Unfortunately, "Tribalism" still looks like an "Us vs Them trend among new actors perpetually trying that their own offspring scale up in the dominance hierarchy of the tribe.

Hence, Good, Bad or Indifferent? or Our Strength vs Our Downfall?
Uhmm, I suppose we'll have to see the outcomes yet after three million years more. Tsk Tsk }:)