Executive management suffers from "smartest people in the room" syndrome. That sought from team members at all levels is simply execution. Any debate / discussion that may have occurred came to be understood as largely pro forma as decisions almost invariably were pre-determined.
While this may have made for streamlined decision making it did not result in optimal outcomes. Further, the practice served to undermine the sense of being a valued team member. There was a clear delineation between those deemed trusted and therefore worthy of being listened to and those who were not.