The sideline calls the play which the QB relays in the huddle, which includes the snap count is to use. The QB’s job is executing the play called. And if the play called is a pass, which it is more than half the time in the modern NFL, part of that execution is completing the pass. Which Tebow doesn’t do.
A QB with under 50% completions is not protecting the ball.
He has a bad completion percentage. And over half “his” wins involved him throwing less than 10 passes. He is quite simply not a good QB. He’s a gamer. Lots of effort. And highly entertaining to watch, so long you’re not the guy who called a pass play only to watch him throw it at the grass.
My “opinion” is matched by the 4 different coaches he’s worked for over his career. And in a few months there’s a good chance a 5th coach is going to be added to the list of guys acknowledging he doesn’t have what it takes. It’s his failure they see, and that I’m pointing out. Sorry if you don’t find that convincing, but that’s on you. His history is there and plainly obvious: cannot complete passes in the NFL level.
Then how did he get 17 TD passes?
A QB with under 50% completions is not protecting the ball.
Having more TD passes than interceptions is the usual measure for protecting the ball, or I suppose interceptions per pass attempt would be another. Then there is also the matter of having more wins than losses. Most of the time in the NFL, the team that wins turnovers, wins the game. And Tebow has more wins than losses. And Tebow did turn the ball over significantly in his losses, but he had fewer of those than he did wins, when he did an excellent job of protecting the ball.
This seems so simple. If you can't find a safe receiver, you can run it or you can avoid the interception and the sack. More than a few times at Denver, he got the ball to receivers who then muffed it badly.