Yes, just finished reading it a few weeks ago. Very interesting and informative, although I wouldn't make that correlation between Bateman's work (which has largely been debunked) and schismogenesis between groups. Besides the fact that Bateman's methodology was sloppy, he was reporting on supposed inherent instinctual behaviors and rejecting the culture of your neighbor as a way to strengthen the bond of your identity is a social strategy.

Here's something I wrote about that recently.

https://medium.com/inside-of-elle-beau/why-do-so-many-cling-to-the-gender-binary-bf3e7938ea80