Can he read defenses pre-snap? Can he get the ball out to the right receiver no more than 2.8 seconds after the snap (1.8 preferred)? Those were his big weaknesses, that’s what needs to be fixed.
If you watch the video you’ll see the quick pass is one area he’s been working on. So yes he can know pass it faster then 2.8 seconds.
Don’t know about the reading defenses. he’s always struck me as someone who is willing to study though.