How does it look to recruits and their families when a head coach and a player are yelling at each other
Have you ever heard of an organization called the Marine Corps? Those guys yell at young men a lot, and they still get thousands of superior young men to join up with their families' blessings.
@ss chewings don't happen in a perfect world...because in that perfect world, no one screws up. Also, @ss chewings are seldom fatal, both the earned ones and undeserved ones. At least Pelini and Bell both know what they thought of the whole deal.
An @ss chewing is a tool in the toolbox, just like encouragement or extra coaching. It doesn't fix all problems, but it has its time and place.