I share some of your criticism. I don't believe there is the one universal style to management. There aren't even styles that fit certain types of employees. There is making good decisions in the face of problems and being able to communicate with your team. The what is much more important than the how.

Maybe that is just my personality type or whatever, but I often don't see the thr essential wisdom. The post isn't braggy though and it is appreciated that the author shares his ideas.