He makes a lot of interesting points, first and foremost in my mind that a culture of individual meritocracy can only exist in a nation of shared tribal identity. When you are in a multicultural society all of the primary struggles involve conflict between tribes and leave little room for individualism.
Not to defend millennials but I think BPS does them a slight disservice by chalking up their embrace of socialism, communism and fascism to strictly historical ignorance. While their historical ignorance is glaringly obvious, one has to recognize that for that generation the general lie of the idea of "free market capitalism" has been most striking. They have seen it fail and they can perhaps be forgiven for not realizing that the failure of the free market that they observe is the result of the market being anything but free. Little wonder that in the midst of a rigged system where many of them feel hopeless to achieve what older generations took for granted that they are looking for something, anything else. There is something to be said for this, although socialism/communism are not the answer, having been tried and having failed disastrously.
Tribal identity is the single survival mechanism for the future. An egalitarian fantasy will not end in survival. Without turning to the most fundamental unifier, our blood, there is little hope for making it through the fire that is coming.