In one of my other comments I mentioned no one with intelligence expects a child to be perfectly silent at all times. However if you know your child cannot sit still or remain at least moderately quiet, then it has no business being on a plane. And of course there are nuances to this, but the number of parents who seem to think the world should conform to them for having a child is frankly gross. I am not a fan of kids and i hage no desire to bring any into the world for a numbrt of reasons, first of which is i understand the responsibilu involved in having kids. Drive if your kid isn’t able to handle being on a plane. Simple as that.