Some of the books also contain statements that, as far as you can tell, are outright nonsense. One suggests that the only reason you or Fred have any problems is that you weren’t praised enough as children. You try on that perspective as well, but it feels yucky and nothing new clicks into place, and so you move along to the next part.

I don't think the problem with that statement is that it's outright nonsense. The problem is rather that it isn't actionable and doesn't tell you something you can do about the situation.