I've passed this info on before, but some folks are too ignorant to understand.
TB broke his arm, just above the wrist. They had to put a plate in it and since that injury, he has lost grip strength. A strong grip is critical for an athlete throwing an object. Footballs (big and heavy) are one of the most difficult to throw accurately and with velocity. With a strong grip, you can throw the ball with a high release point....you still have to spin it to get that spiral, which increases accuracy and velocity. A high release requires extending your arm to its full length and having the strength to pull it down to spin it.
TB worked on this release point after transferring from Houston. His natural throwing motion from HS was a lower release, which a lot of dual threat QB's have since they are not throwing from the pocket much. He improved his mechanics and raised his release point by his soph year. He never did get the footwork in the pocket down, but he improved enough to a factor in our passing game. That injury last year weakened his grip and at times this season, he has reverted back to his old release point.
So....you ___gots critiquing his passing game should go outside with a football and try throwing it hard, with as high a release point as possible. Then you MIGHT understand.