I imagine it is a very delicate balance between handling your players and scrimmages with kid gloves, and then being unprepared and getting hurt in games. If you think of injuries as statistically unavoidable, then you kind of get to pick your poison - practice hard and play prepared, or practice soft and play vulnerable. Presumably coaches have really great stats on all that, and we choose to practice hard.
But man my heart sank when I read the OP - I couldn't bring myself to believe it until I watched the presser.