I think this is not so good advice even in 2022. A lot of disagreements are arbitrary, emotional, lacking context, moreover, in any organization of human being

I think this is not so good advice even in 2022. A lot of disagreements are arbitrary, emotional, lacking context, moreover, in any organization of human beings, public disagreements can amount to populism, narratives which doesn't help team cohesion. Depending on the issue of course. To the extent that people are there to do their jobs and manage others, there's legitimacy in that authority, which comes with generally a wider and at least different purview. Being a good player means respecting that reality. The advice in the article is decent in helping people untie a bit of common issues from gripes, lack of perspective etc. and I would add strongly that one should probably take the disagreement in 'private' and not make it a public ordeal. Most managers, when approached reasonably, will be good with at least the point of contention, if not resolving to the best outcome. I wish everyone had the opportunity to manage others, and do so at least 2 layers up - it's an alternative universe up there and it's really, really hard. I think 'Director' is probably the hardest job in the company in many ways. The calculus for most things is just different. Optimization in every corner is usually not the objective, and strategic issues start to enter in the decision making in a material way. With that experience, people would be able to put things in context a lot better, which is a big challenge actually for front line people who often over or under appreciate the magnitude of the issue they're dealing with. Then, approaching the 'disagreement' comes from a different perspective. For most of my career, I would have said I wouldn't want to have my manager's job, it's just way too much fuss. Not only that, my experience in management has fundamentally changed how I hire people - 'getting along' in grey situations, where nobody is ever really going to always get their way, people are smart and passionate etc. is hard (for most) and a valuable skill. And personalities are different as well, some people are 'disagreeable' but that doesn't even mean they are 'disagreeing' with you even when it seems like they are! Figuring out how to do it while getting along is 1/2 the job.