Eerily optimistic assessment, unless there have been cases of offloaded obnoxious children, which I doubt. A more realistic description would be that they don't care about policing their flight/lounges/etc. unless they feel they can't get away with it: no problem with noisy people on the phone, noisy people in the lounge, noisy children... but they can't risk someone getting hit on a plane by a drunk and agressive passenger for liability reasons.