Combined PING! and DANG!
As others have said it's the parents. It's not just that they don't teach their kids manners, but the parents in this story didn't respect other patrons. Even when we ate at a family restaurant like Denny's, when the kids were little (0-3), if one started fussing, I'd take him outside and my husband would have my food boxed up. No matter what level of restaurant, other patrons don't want to hear kids fussing. For some people, dining at a Denny's is all they can afford and they deserve to eat in peace.