Perhaps so.
But, he brings up good points about Moore's "size and strength" issues, and successfully overcoming them. I can remember reading Men At Work lo these many years ago, and the theory that Tony LaRussa (among others) made a good Manager because he wasn't a terribly gifted player: He had to work harder, work smarter, and find other ways to win. These mental lessons and inner strength gave him the insight to get just a little more out of his players than most. Moore was a cerebral player back in the day, and thrived in Peterson's well-executed system.
While I believe he would be an excellent Coach at TCU, the chances of him walking away from the NFL, and the Cowboys in particular, is pretty danged remote. He may well realize, however, that being named Head Coach of the Chicago Bears means an even heavier workload, far and away more angst and craziness, and the probable firing of himself and his whole staff in two years. The NFL is a grind, it doesn't care, and it is relentless.
We shall see.