I never been in a flight, or train across Europe where passengers showed just lack of respect for the others.
The only ones pumping anything loud, on trains or busses, usually get quickly pointed down by other passengers, personal or security.
Ah, and then there are the rebellious kids or gangs, as the other exception, which usually don't take flights anyway.
People who cannot figure out how to share use of shared space should lose access to those places.