About this, it could be part of his development and learning. Earlier he ran around chasing hits, so the "lack" of physicalitiy may well be him trying to stand back a little, work on his positioning, learning to value every situation right. That may have the effect that he becomes a bit to passive instead until he finds the balance.
As for the rest, I agree. The kid is in some ways in over his head and has to learn in the big league what he should be learning in the AHL but can't, because reasons. Still, he is handling it well, he has the coaching staff's trust and it's not like the game falls apart because of him. Not any more than usual, anyway. Besides, he could perform a full brainectomy and still outplay Benoit and Meszaros.