I don't think there is vitriol. There is a difference of opinion between those who believe that customers have a right to a peaceful meal and those who believe that we should live and let live.
Nobody has said that children should be seen and not heard, and I don't think anyone has said that they shouldn't be taken to restaurants - just that they should be expected to behave when they are there. Most people would accept children forgetting to be quiet from time to time, but there is a difference between that and shrieking loudly.
Sometimes it’s just the small things that press the bruise isn’t it? 😢

yes he did it well, didn’t he? Some rude person yelling across the restaurant, but he simply quieted down and didn’t stoop to their level.