I met him once and he told it to me straight. He said the books weren't intended for us, guys that knew the math. They were intended for the stupid fools that were throwing their money away left and right. They were the ones buying his books and coming to his shows. When you think about it, it makes great sense. You can write a great book with perfect math, but you are likely only going to draw people like us. Or you can write a book aimed at the masses, people that would never read a real quality gambling book and sell like 20 times more books. He said that was his intent, nothing more or less. He admitted the whole thing was mostly a ruse, he claims to be a professional bettor because he is, but he makes his money off of sports, not casino games. He is careful to say I am a professional gambler, but never quite stating he isn't making his money from table games outside of card counting occasionally. It was all an idea of a book publisher that wanted a guy who could claim he is a pro and in turn he ran with the idea in the hopes of getting the squares to limit their losses. If you read the book you see that most of what he pounds on is loss limits and win goals, something that might be voodoo math, but compare that to the way most people play in a casino and you will say it would be a huge step up for those people. And he points out he is in a no-lose spot, these fools if they follow his advice are bound to do better and the every now and then "success" is good PR for him.
Never forget books, while potentially educational, are in essence entertainment. If you don't target the right audience and you don't talk to them at their level, you will always be a niche author, a la Skalansky and Malmuth.