First, I have to admit - I like the style of the book: it is dry. There are no analogies, there are no stories about random people repeated 10 times to prove the point and make it stick.
Author provides his experience and receipts to problems he encountered from his perspective and which worked for him. Now - it doesn't mean it will work for you and it is not a recipe book (although content partially is delivered in recipe way "do this in this way, it will work").
Filter it through your lens. Remember - author worked in large engineering organizations.
I found few of topics there very relevant to my current role and my stage in this role. Most likely I will refresh some topics in the future. Also likely that some part I will never use.
Lands on my technical manager/leader bookshelf next to the "The Manager's path".