Overall I didn't hate it as much as I thought I would, and even quite liked reading the examples (although many are a little too successful since this book is trying to sell you something).
My biggest criticism is: because it's written for executives, its quest to eliminate "below the line" finger pointing doesn't give quite enough space for people who are struggling under bad or toxic leadership -- and that starts to give the flavour of "no excuses", an unwillingness to acknowledge basic realities.
In fact, I would still say it's necessary for leadership to start with common complaints so that leadership can understand the problems that people are facing -- and then you reframe "above the line", help your employees feel heard, and eventually move past what can't change. (This was a common pattern in a number of examples -- and somewhat obviously the most successful examples involved a top-down change.)
But that nitpick aside, I still enjoyed the book overall! Even as a non executive it helps to understand the pattern of thinking and figure out the best opportunities for seizing ownership, and strikes at the essence of natural leadership.