I wonder if folks like BoSoxFan45 (
"I try to live my life by this principle, and wish society would do the same...
I have the right to swing my hand only so long as it does not hit you.") and Droneklax (I also have a right to a quiet ride) have ever farted 60 mins after dinner was served, or maybe snored while over the Atlantic.
Those of us who don't live in hermetically-sealed bubbles do stuff that affects or infringes upon other people. And the very essence of society and relationships requires a set of tacit understandings to deal with all that.
So if you have ever farted, snored, or done anything else on a plane that infringed on others' serenity, you really haven't got much of anything to say about an infant or toddler who's doing his or her own thing.