[Nevadaref]

I don't mind the absolutism of the rule as it protects the safety of the players.
The physical nature of the college mens game had reached the point at which strong action needed to be taken. I salute the committee for doing so.
If the rule is written clearly and communicated clearly to the players and coaches, then enforced as stated, there won't be any objections. Look at it from the defender's standpoint. He has the right to be there (short of causing contact) BY RULE and thus shouldn't have to worry about taking one to the chops or other rough/intimidating tactics while trying to play tight defense.
Even tonight, neither Tom Crean or any of the Indiana players made a fuss over the call. This action is now seen as unacceptable at the college level. The players must be mindful of and in control of their arms.
We will likely see this rule change come to the HS ranks soon.