So you can claim moral victory that nothing you have done was illegal while watching your plane depart without you aboard
This.
Ignoring all of the other issues (like the fact that the regs are probably unconstitutional as applied to someone who merely talks back to an FA), it ain't gonna help you if you're still on the ground. That's why, unless you have
a lot of time on your hands, it's usually better to just shut up.
Of course, if it weren't for people who cast aside such self-interest, we wouldn't have the civil rights that we have.