I like the focus on the ancillary characters on Donald Trump's team.
Too often criticism comes directly at Donald Trump, Steve Bannon, or Jeff Sessions.
His children, his son-in-law, get a pass most of the time.
Over the course of Fire and Fury Ivanka and Jared receive a lot of attention (much more than the media have typically afforded them).
Fire and Fury chooses to go for the jugular to a large degree, as it becomes readily apparent why the author languished in semi-obscurity for so long.
Michael Wolff even has acknowledged this, saying the main reason he was given so much access was because he complained about the slights he received by the same Manhattan elites that Donald Trump currying favor with, to no success.