At that age I agree that pidgeonholing kids into a position is unnecessary but it is possible that the HC's kid is actually pretty good..no? Labeling something Daddy ball without seeing the actual players involved is probably not the wisest of moves..
at 10u, I do not care how good a player is, you need to provide others some opportunities as well. limiting the pitchers to only OF or bench when they are not pitching (do they still hit?) is a way of avoiding contreversy when they outperform HC or ACs kids, as at that age, the pitchers much of the time are the more athletic kids.