Yes, a lot of that vitriolic anger is, in fact, because he's trying to sell a book.

Thing is, I agreed with the message very strongly. It's a message that I hold dear and it's something I try to live my life by on a day to day basis. But the reason this strikes anger in me is because the message he's pushing sells himself, his potential and many others like him incredibly short. It's a flat idea that could be so much more, but it's not. And it's used to sell a book. Fuck that.