That's it. These are 17 year old kids. They arent thinking about limiting number of touches as a postive. They are thinking about maximizing their chances of making big plays, and thinking about maxing their stat line - chances of doing that decrease as touches do. These kids arent mature enough to think long-term, and honestly, they are probably making the better decision for them, in that moment, going to an offense that will really feature them vs one where they will, at best split carries. As much as we feel they'd be better off thinking long-term, we have to realize that that position basically assumes they are getting to the NFL. They dont have the luxury of that assumption. They are thinking what can I do NOW to maximize my chances. If the play that maximizes their chances also means their shelf life once there is decreased, in that moment, that's a factor that is low on the totem pole. Shelf life doesnt matter if you dont get there, so doing what maximizes their chances has to be the priority, even at the cost of wear and tear.
Don't get me wrong, I'm not saying playing for mullen can't get you to the league. But what I am saying is that playing for running back featured offenses increases your chances to get on the field, and increases your chances of touches, allowing you more opportunity to get game reps, and more opportunity to develop and make big plays that NFL scouts notice.