He's one of those unfortunate ex players who have taken a few too many hits to the head. They gave him a TV job because they feel sorry for him and want him to think he's still somewhat rational.
Just go with it and try not to laugh in his face when he starts babbling.
It makes no difference to me, other than stuff to laugh at. I was doing the same thing last year when they picked the Colts to go to the Superbowl. I knew they weren't ready, I just didn't expect Luck to go down. All this nonsense is just to fill time on a 24-hour NFL Network. They have to talk about SOMETHING. Has NO effect on the playing field whatsoever.