One word: formula.
This isn't about breast feeding, which Delta is clearly fine with as long as it's covered up, it's about a bunch of emotionally adolescent adults trying to overcompensate for their own mothers' shortcomings. I bet the vast majority of them are in their thirties and don't know the first thing about mothering and that these kids are going to be utterly spoiled growing up. See, it's all about THEM THEM THEM...not the other person's poor six year old kid who has as seat next to them and has to endure seeing an engorged 35 year old breast sticking in his or her face because some idiot can't be bothered to cover it.