It sounds like he learnt lessons about the need for inclusion of users, need for strong information flow, what doesn't work (from his perspective) in hierarchy.

Most management books that most people recommend are not based on scientific evidence, studies, academic literature, etc. They're mostly memes; relatively recent books written by some kind of famous person, benefiting from the heuristics that make people favor the famous, successful, or high status [regardless of the fact that their lessons are usually from one source, type of company, culture, etc]. Compare that to practical management books based on evidence and studies; they're boring and old, or simply not catchy or sexy, so nobody recommends them.

There's also books that some people know about, and have a good track record, yet nobody follows. Deming's books should be mandatory reading for anyone in management, and anyone who cites Toyota as a model should absolutely have read them. But good luck finding anyone who actually follows the advice (same for Ackoff, Goldratt, Senge, Jacques, etc). Likely they are just too complicated and most people are not smart enough to manage this way.