Moos's approach was to hire the coaches, and then let them do their jobs. Most coaches would like that from an AD. Unfortunately, based on rumors on the football staff front, it sounds like some of the football coaches took advantage of that freedom, and weren't as professional as they probably should have been.
Regarding the administration of the Athletic Department, again he let his Assistant AD's handle the bulk of the work without micro-management. That can work a lot of the times, but during COVID, with the uncertainty going around the University and Athletic Department, Moos probably needed to be more hands-on. He took the opposite approach, which led to his "early retirement".