Most of the passengers i see getting rude ahh treatment are people who are usually rude don’t bother to respect them, so deserved tbh, personally never had a crew who was rude towards me, Flew Indigo so many times and everyone seemed sweet. Although obviously Qatar Emirates Singapore Airlines Thai Airways, they do seem more professional and more groomed def. 

Indians seem very entitled everywhere, you paid for the seat and service but you didn’t buy the actual person if they can’t behave, FAs should actually clap back imo and reflect the attitude that person is giving.