Yes. The content of the book is interesting, I learned several things I didn't know. But I see that he has self published it and that the last chapter refers to the rest of the book as "this article". The chapters also almost look like separate articles, and they afe not very well tied together. So I kind of get the sense that he sat with gold but no publisher wanted to take it, and he might just have  decided just to publish it without doing the last hard 10% of the work. Who knows, the book might have been seen as too dangerous.