The article points out that good managers don't make decisions based on politics. What I have seen is not only do bad managers make decisions based on politics but also ego. I have seen ego destroy startups and big companies alike. Many tech companies interview managers purely from a tech perspective and do not effectively drill down into the management side.

A good interviewer can get a sense for someone's ego vs. assertiveness pretty easily, but so many interviewers are looking at experience and skillset over character, personality and style. Experience and skill set are important but the other aspects are often overlooked. As an example, a hands-on development manager needs to not only be screened for the development chops but also if they are mature enough to handle the decisions that need to be made in that management role.