When it first came out I read several reviews talking about how it was a treatise on how we should all be poly, based on our genetics and that monogamy was a purely social construct.
I don't need that sort of thing to work out how to do poly better, or to justify how I feel. Others might. I really dislike discussions about this sort of thing, so disregarded the book.
Here is an earlier thread on the topic where the forum regulars at the time gave their viewpoints: http://www.polyamory.com/forum/showthread.php?t=7555