Yes, 4 games is not enough to evaluate a young QB. And Cam did him no favors in the playcalling department. And the offense did nothing to help him succeed.
But, I have to believe that John is not the QB of the future that he was built up to be. And seeing Mueller get the axe makes this even clearer. If Beck was part of Mueller's grand plan, and Mueller was let go....then doesn't it stand to reason that Beck doesn't figure to be a big part of the future.
He wound up with (I believe) 7 turnovers: 3 interceptions and 4 fumbles. 3 of which were returned for TDs. And that his against the two TD drives he led - one TD pass and one rush for a TD by him.
He showed poor ball handling skills and an inability to adjust to the speed of the game.
Sure, he might be around next season, but I have no expectations of him competing for a starting slot....so there's another QB who won't be here.