I see the author's point and I feel it too (I'm only 2/3 through the book) but unless he has evidence to show that Kahneman used flawed research, then he is just replacing this baseless optimism with baseless pessimism. The book definitely gives a lot of overly confident and pat answers to complex questions, but the book is aimed at a mass market who are trying to grasp the basics of decision theory and are not going to read the sources.