I am not sure about my pancake thing, but my impression is that the restaurant owner was irritated that the people ordered a menu item, for a very hungry child, that takes a long time to cook. Therefore, the child was left screaming while waiting.
Also, what 2 year old eats a full order of pancakes? My daughter will be 2 in November, and when I make pancakes she might have 5-6 pieces and some fruit. My son was the same way. Also, as a parent of 2 children I know that it is a necessity when you go out to eat to bring snacks (ie., cheerios, raisins) for them to chew on while we are waiting for food.
Sounds here like the patrons were complete dolts, and the owner may have gone a little over the the top out of frustration.