Middle managers are cannon fodder. They implement the dirty, unpopular things that upper management doesn't want to sully their hands with, and when they're not doing that, they bust out performance metrics to try to show that they're more than just hired goons.
When you hire someone like that, do you care what their interests are as long as they seem like they can handle the job?
Upper management, on the other hand, is very much expected to be involved in other things that you mentioned. They are the ones expected to be the rock stars of their field.