In a number of companies I worked at the number one reason people left was a conflict with their supervisor.
I think a much better introduction to management is the manager tools podcast. And after listening to about 10 or 20 episodes, you'll see how hard management really is, especially if you want to do it right.
I think it really crystalized the issues I had reading the article; you can do (or try to do...) all the ‘right things’ and still have a terrible result.
If it was easy to get right, things would be great... but its not. Its hard. ...and a slide deck of protips doesn’t cut it as a solution.
Just an example of this, culture is hard to get right. You can't hire yourself to culture. It's something that has to be practiced by all your employees every day.
If you have 1000 managers in your corporation, you have 1000 micro-cultures. If a chunk of those managers figure out they can berate their directs on a daily basis without punishment, then those employees experience of your company will be terrible.
That's why Amazon employee reports vary wildly from great to horrible. That's because while some managers are truly great, some are truly horrid. The culture isn't enforced equally across the company.
Jeff Bezos might treat his corporate execs great on a day to day basis say, but the average employee is usually levels of management removed from this to be inspired. Instead they see coworkers sobbing at their desk because they were fired, or forced to resign. Other's might actually deeply enjoy their time at Amazon, but it's because they got lucky in the micro-culture lottery.
The point I was making is: this article isn’t practically useful, its just ‘how it would be nice if things were’ not ‘how to get there’.
Its got some good ideas, sure... but as you say, reality and ideals aren’t easily matched; so as a step by step guide, its somewhat trivialising what is actually a very hard, entirely unsolved set of problems.