The level of commitment the coaches ask of the players, is not reciprocated by coaches, back to the players.
My son was a starter both ways, and a team captain on his HS football team. At the time, the largest school in the state. He sustained the same injury as Taysom Hill. Broke his foot.
After he could not play, the coaches barely even talked to him. Never checked in on him to see how he was doing. Never reached out. In short, in his hardest time, they were not there for him. Their attention and focus, was on winning. My son felt like he was nothing more than a piece of meat to the coaches. He lost a lot of respect for that coaching staff after that .
Plus, the team rules. Rules like, if you miss a practice, you don't play. Well, that only lasts so long. If the game is a must win for the coach, the star player that missed practice, played.
This isn't all coaches, but far too often it's what you see out there.