There is stuff in here I definitely agree with (record every meeting!), but there is also tons in here that I personally disagree with (e.g., on performance management[0]). This isn't necessarily a criticism -- different problem domains likely demand different approaches and leadership styles -- just to say that I wouldn't take any of this guide as sacrosanct: if anyone reading something in here that doesn't comport with your personal experience, I would recommend deferring to your own experience.
[0] https://twitter.com/bcantrill/status/1216491216356823040