I preferred the Nuclear War scenario book. Same style of narrative mixed with expert insights. The first several days of the scenario were riveting, after that less so. This one tries to describe the impact of social media and influencers, which I found inconclusive.

She also reports that Bush rode in the back of a laundry truck on the day of 9/11 to avoid detection getting to the Doomsday plane. Single source attribution, though.

I thought it was better than the Nuclear war scenario, which I also enjoyed. I thought she did a better job in this one explaining possible off ramps or inflection points in the scenario but saying "this is the one we're exploring", which answers some of the critique of the nuclear war scenario.