I love your answer. And I have to agree.
I stopped buying books through Llwellyn years ago, unless I'm really desperate for a bit of eye candy. They have sexy covers and nifty titles down to an art. Too bad they aren't as good with scholarship and research.
And honestly, I also agree with some of his other assertions. After you've read the basics, the only way to really continue is to practice and get your own experiences. Advanced books, by which I mean books that discuss indepth the meaning behind magic, ritual, metaphor, history, etc, are no substitute for actual experiences. Maybe that's why Llwellyn has never sold them, they are definitely not as popular.