I think far fewer pitchers would be injured if they (and their parents and coaches) followed the lead of Trevor Hoffman's father and took a proactive approach to pitching rather than a reactive approach; if they threw only as hard as they needed to rather than as hard as they could.
I'm taking this approach with my 11 YO son.
He has some mechanical problems that are costing him MPH (in particular hips not rotating far enough ahead of his shoulders) that I have deliberately chosen not to address because he doesn't need the speed.
Instead, we spend our time focusing on location and control (e.g. keeping the ball down), and that works just fine.
Against average hitters, he strikes them out. Against good hitters, he either strikes them out or gives up ground balls that are fielded by the infield.