My take is that he's describing why we have an affinity to do certain things, and it's because it is baked in at a very very low level physically, and is also very ancient. Meaning that 'thoughts' like postmodernism, which is less than a century old, is a very poor substitute.

Which, to my mind, is why the left hate him and find him 'controversial'. They are influential, mainly because we've let them become so, as we're too busy 'getting stuff done' to go to the local town hall, the PTA, and assuming that universities are there to expand minds (they're not).

He's opened my mind in several ways, and is a big part of my own red-pilling.