People are so unused to the idea of authority that it’s a good reminder sometimes that, yes, there are situations where SOMEONE IS IN CHARGE. And, you have to do it their way.
Pilots and attendants both know the signs of a passenger who may become a problem. They may not always make the right call, but I’m all for an emphasis on civil language as one path toward increasing public civility in general.
It’s not that there are rules, it’s that the rules are so arbitrarily enforced. You telling me everyone who uses the F word gets kicked off the plane? Or only people that use the F word AND are critical of the personnel?