Bro, reframe this "I have so many entrancing growth opportunities for my attention that I find it hard to take value from someone else's experience".
Really, his bullet points are pretty basic management 101 - - but most managers don't know them and if it helps even one person be a better manager it's worth this time.
This post didn't feel particularly braggy to me. Also, having connected with Ben (I cold emailed him about something he referenced in one of his earlier blog posts), he seems like a person who is genuinely just trying to help and share his knowledge when useful.
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.
Really, his bullet points are pretty basic management 101 - - but most managers don't know them and if it helps even one person be a better manager it's worth this time.