I was on his side even after the Chargers game. What really changed my mind was the last throw against Jacksonville. To me, that showed that his arm strength is not good enough to make the throws he'll need to make at the NFL level. That being said, I think he can still be a decent backup to help a team out for a couple of games a year if needed.
I hope I'm 100% wrong and he turns out to be the next Tom Brady.