The infuriating part is that Taylorist management dogma has made the average (likely mediocre) manager better compensated than the average engineer despite most being demonstrably lower skilled at management than an individual contributor of similar years of experience.
This pushes even middle management roles into a more sales-like personality set of people that are money-motivated to a larger degree than is perhaps healthy for the needs of the role. Upper management does need a sales angle to a degree but your usual engineering manager is not being focused appropriately if they have to "sell" the needs of their department - the prioritization for different departments are better done in committee fashion transparent across managers rather than one-on-one back room dealings that a lot of situations turn into when we talk about "managers should be enabling and removing barriers." Political in-fighting among managers is negative value to any compan - it's a civil war in effect. Some companies resemble the economic output of war-torn nations almost as a result.
In the job I just left, management couldn't remove the most important barriers at all - the biggest cost savings that every competent company could do easily would always be the last thing possible. Meanwhile, most management directives boiled down to "do more with less than is healthy... and don't burn people out!"
When you have managerial dilemmas, something will be dropped. Work just plain won't get done, deals won't be made, costs will overrun, or people will burn out and leave. Your company culture is what will determine what to sacrifice.