Here's the problem regarding the Bannon slam: It is not a coherent move if the narrative that the book is "complete fantasy" is true (or at least believed by the administration.) To this point, it seems that Bannon was actually drafting a statement that defended Trump and painted the book and author as untrustworthy Fake News^tm. That statement got scrapped because Trump forced the narrative to a point where it no longer would have worked.

If the book is misquotes and quotes out of context, and the author had several months to collect quotes to take out of context, then couple that with an impulsive administration, and here we are. Sure it's a sick take down-- but it's also probably friendly fire. Oops.