I have read some parts of that book. He doesn't appear to promote white supremacy a la "Blacks are dumb, therefore they're untermensch," but instead shows an empirical observation of the differences in educational attainment which are influenced and biased by culture. He even discusses how affirmative action has helped blacks attain professional education.
This is the result of one of feminism's tenets, that it's degrading for women to stick into the traditional housewife/homemaker mother role. Notice how stories of "female empowerment" figures mention stuff about family and friends supposedly shaming them from taking up further education or careers and telling them to just be content as a housewife--which is nothing but a jab at the...[More]
This is another consequence of the increasing vacuum left by masculinity in society. Biological males are either becoming effeminate to outright desiring to live like women, while women are becoming more unhappy having to take on both gender roles.
I had no qualms with these discoveries as it helps me understand women better. Problem is that if all their hamstering is taken at face value and given legitimate consideration by the powers that be (i.e. weak-frame males who caved in to feminists' demands and everything), which had resulted to all the shit this gynocentric social order has brought.