Well yes, it all is. The eye popping plays and all of that is game script dependent, which is true for every DL. The stuff about him not loving football is just blind speculation not based on any sense of reality. The "wearing down" stuff is made up. You're evaluating a player singularly on his sack totals in games where the offense couldn't generate a lead and the run defense, mostly outside of him, was helpless.
It is a nonsense evaluation. If anything, he is trying too hard to do too much on the defensive side of the ball and running himself out of position.