I read the book, and I hate myself for spending time with that. He is not just a self promoter, he is a liar, he certainly doesn't work 4 hours per week. He may have done it for a small period of time, but how many times per day do you think you need to work to get the self promotion he gets?

The plan of the guy is simple: 1) find something that most people are interested in (working less in this case); 2) Research whatever has been said about the topic and write in a friendly way; 3) make people believe by whatever unsubstantiated means that he is the master of that topic; 4) promote the book and laugh all the way to the bank...