I'm torn as someone with 8 month old twins. They can barely survive a car ride through the mountains due to their ears popping so I doubt a flight would go well at all. We probably won't fly until they are a little older and can communicate better. On the other hand, just throw some head phones on. I fly A LOT and even some red-eyes with babies and it doesn't bother me at all. Sometimes parents have to fly with their kids, no choice. But taking newborns on an international vacation? Not necessary.
We're hyper aware of being disruptive to other people at restaurants, etc. We pick places that are kid friendly, already loud, or have large outdoor spaces (breweries are perfect) so as not to bother other people. If they start melting down we leave. There's no doing this on a plane so that worries me and I would be super uncomfortable if I couldn't console them if their ears were popping, etc, since I know people are trying to sleep, etc.
But, alas, this is ERA so let's go even further and just ban kids outright because any discussion about kids here ends in the fact that parents are selfish assholes destroying the world by having kids.