I might agree with you on US domestic flight, but this was an outbound from France. I'd assume that most passengers are French, not Americans returning home. I'm not so sure that the French passengers would react the same way.
-PJ
The politics in France is as split as it is here. I was impressed with how many solidly conservative people there were there and how many of them wished us, and America, God's speed, despite the antics of their own government. They hope to gain ground in their next elections...just as we hope to gain back lost ground ourselves.
So, I think there may well be enough who would act given what I experienced there in December.
Given that the destination is the US, why shouldn't at least half be Americans?
Wish I'd taken an informal tally when my wife and I returned from Paris last October. (Parisian French is her other native language, so there were no problems in communications.)