Interestingly, JJM's best two games at QB have been the Week 1 Bears game and the Lions game... both happening to be after a very long layoff and a 6 week gap. It's almost as if the more he gets settled into playing KOC's system, the worse he performs. He plays his best when they're in no-huddle mode where there is less time for KOC to talk to him in the mic.
JJM's playing like one of the worst QBs of all time, he looks like he's light years away from being a quality starter but I think KOC's complete inability to coach him is a factor. A young player, even a bust of a QB should improve with experience. Is it unreasonable to expect KOC to get him to play at the level of a backup QB even if he doesn't have what it takes to be a starter? They even got him to stop scrambling, which was a big factor in moving the chains in the Lions game. It's the same when Dobbs was QB, KOC got him to stop scrambling and didn't design a single play to take advantage of his running ability and he got worse as he learned the system.
And unfortunately he's also fragile, if it is true he was concussed on the scramble play. That'll be his third injury on a run in his career. I'd like to see if Brosmer's any better, but my suspicion is that KOC isn't very good at mentoring young QBs, he needs a vet to run his scheme. He sure as hell isn't going to adjust to his personnel to his players. It'll be just like the last two games of Darnold, most of JJM and Wentz's games - a lot of holding onto the ball, KOC trying to make him throw deep too often, poorly blocked screens, and no slants.