I liked this book. The chemistry and physical reactions involved in all aspects of brewing are daunting to someone who hasn't had coursework in organic chemistry. I learned a lot from this book and from the other Fix books.
I can forgive the arrogance of an author ... everyone wants to appear the expert! It's just marketing, but trying to tear an author down to make one's self look smarter - I have trouble with.
This book, along with the other Fix books have significant merit to both serious beginners to advanced brewers. We're all trying to improve our craft - this material can go far in helping you do that.