First off at least one of the authors is into social justice. Social Justice tenants run completely counter to many of the findings of anthropology. It's a source of bias.
Second the first chapter comes from the perspective of introducing a better anthropological narrative given a lack of non-depressing stories of human civilization. I'm here for the truth, I'm not looking for narratives that are good or bad. Literally the book goes into "political implications" of alternative "narratives". I quote:
"HOBBESIAN AND ROUSSEAUIAN VERSIONS OF HUMAN HISTORY HAVE DIRE POLITICAL IMPLICATIONS."
all caps literally first chapter. Why even bring up politics at all? Let's talk about truth. The consequence of the truth is irrelevant to the truth.
It could be the authors built this book with a pre-existing agenda.
Whatever, if it has this many accolades I'll read it.