So I have a friend I've known for two decades come out as trans, and began reading tons of material from trans people to learn about it.  Phil's book nails him to a T.  Phil doesn't say that all transgender women are atg, just that most are.  What was useful for me was that I could easily identify my friend as one.  I say this as someone who supports him fully and has no political or ideological agenda.

This book might be a life saver for him.  Instead of going through expensive and life altering surgery, he can learn to channel this sexual/romantic aspect of himself into a healthy outlet.  Your nitpicks on his section on atg are superficial as you noted.  My friend has wondered at what he is, and hears this gender stuff and thinks it makes it something non-sexual.  This is a fantastic book.  I believe all trans should read it just to make sure they are or are not atg's themselves.