Did you forget the awful years and the non stop arrests of players? He was a figure head at that time. He rambled on almost incoherently in press conferences. He often couldn't even name all the players on the team.
I think that's a bit extreme but I understand your point. Joe couldn't travel to recruit, he was easily fatigued, and acted grumpy when stressed. Most agree that he stayed too long.
My observation was that he was extremely coherent when he was rested but lost it when he was tired and stressed.