You know, I agree with this. It is a bit tacky, but I hate sitting next to someone with an infant. An infant can not possibly take any experience from a game with them and commit it to memory, and alot of things that go on in a game can be frightening to an infant, or even a toddler. The article made a good point to - they aren't just carrying in a baby, they carry in a huge diaper bag full of crap that takes up space.
Leave the baby at home - pay the $35 for a babysitter.