Which behaviour? Not wearing a mask? Have you been on an airplane since the pandemic started?
My experience has been:
You have to wear a mask in airports, EXCEPT while close to a vending machine and eating.
You have to wear a mask on airplanes EXCEPT while eating and drinking food provided by the airline.
I'm pro-mask, I think they help protecting others, especially workers that don't really have a choice (eg: cashiers), I'm pro-vaccine to protect one's own health and prevent health care system collapse, but as far as I am concerned masks in airports and airplanes (and requirements for vaccines on airplanes in Canada) is a joke and some ass-covering from politicians, which somehow trickled down into virtue signaling of "which side" people are.
See also "United Breaks Guitars" https://www.youtube.com/watch?v=5YGc4zOqozo