He claims “authorship” but dollars to donuts, it’s the other guy who is writing these books - Bor is just the mouthpiece-front man.
Are you sure? I took a look at one of his books one time and came away with the impression that this was written by a person almost totally lacking in insight, intellectual gravitas, and ability to write beyond the 10th grade level.
To be fair, I’ve heard Bill give his writing partner lots of acclaim and credit for most of the work, especially the research stuff. And more than once. Also he claims that most if not all the money from his books go to charity. Now that may or may not be true but I suspect it is true.