Depends on the age really. A child under one who’s wailing uncontrollably might be different than a misbehaving four year old. For instance my six month old couldn’t take a car ride without losing his shit and no amount of consolation would work. So we aren’t taking him anywhere, obviously. I have no idea how he’d take a flight and I’m not willing to test it out. Now if there was suddenly an issue with say, extended family that required us to get across country fast then I’m sorry, you gotta deal homey. It’s no fucking fun for me either.
The short of all this is you don’t necessarily know where people are at in their lives or why they are traveling and everyone is different. Kids aren’t one size fits all or work the same way for everyone – and a flight isn’t like going to a movie theater.