I expect him to coach a basketball game by the rules that were agreed upon. I expect the kids to play basketball the way it is supposed to be played.
I do not expect the winning team to let the other side score to make it ‘nice’. That is not teaching them about real life is it?
On the other hand, if you subscribe to the belief that sport is supposed to inculcate a set of values, over and above the actual result, then you're well off the mark.
Even boxers "get it". When a man is taking a thorough beating and can't defend himself, the referee steps in and ends it.
Explain to us the benefits of administering a thorough and merciless beating to a defenseless opponent.