He just looks a lot more hesitant and unsure of himself than the guy we saw at the beginning of the season. I think the injury was a huge setback, plus the shooting slump has him reluctant to shoot. Luckily, AJ's giving him cover to go through this rough patch, which basically all rookies eventually go through.
As far as Young goes, I was really impressed with him, but PG is not what I'd call him.