Did I say they all ate each other? Ah not. Then I leave you to do your own research about the incidence of Stone Age cannibalism all over the world. You know, the bones with the marrow cracked open and all that. So nutritious.
There is a wide spectrum between the concepts of noble savages and Social Darwinism, which…

So what? Nobody disputes that hunter-gatherer cultures had less stratification than settled communities. But once the hunter-gatherers settle down, they will undergo the same process and evolve towards higher stratification. We are the proof of that, having been hunter-gatherers ourselves. What’s your point holding up…

If anything, that example of unusual sharing is the outlier.