Book on Bebop Scales

I asked this question within a fading thread, and maybe not many people saw it, so I'm asking it again here. (Sorry about repeating it, if you already saw it.) I wonder if anyone has seen the book Bebop Scales by Scott Black? I read about it online in the "Tucson Citizen":
http://www.tucsoncitizen.com/ss/entertainment/64160.php

It sounds pretty good. (But I always think that when I read an advertisement for a jazz instruction book.)
http://www.azjazzartists.com/bebopscales.html

One thing I wonder is, are the bebop scales SO crucial to playing jazz? (I'm not saying they aren't; just asking.) This book makes them central to the music (we're just talking bop and post-bop and other styles that developed out of bop, I guess, but still...). It's funny, because other books, like Levine's, don't give that impression. In Levine, they're just another important scale along with the others, not the "key" to everything. And the book that jazzpianoonline mentioned in the other thread I was talking about (the thread called "Best Music Theory"), Jazz Theory and Practice by Richard Lawn and Jeffrey Hellmer (a fairly long and detailed book, not a brief intro), doesn't mention them at all, as far as I can tell. (Or do they call the bebop scale by another name?)

So two questions:
(1) how good is Scott Black's book?
(2) the bebop scale the most important one?