You have never read the book, you have never read a review of the book, how can you with a straight face, describe the book as a “tell-all book “ and “unnecessarily trashy”?
Fair enough. I will not comment further on the book until I have more information. It probably isn’t the sort of book that I would read, in any case.
The details about the luggage of the McCains, their entourage, and their oafishness quoted in this article may not be indicative of the general tone of the book. But it is the details of one’s language that reveal one’s character.