With airlines beginning to require passengers to wear face masks on board, we’re about to see a new conflict, because people are just as awful as they used to be. It’s just that there are fewer of them flying.
When American Airlines debated internally whether to require passengers to wear masks, or merely encourage them to (including by providing the masks), the argument that ultimately gave way to a mandate was that cabin crew would be in a position of having to enforce the new rules. And there are always going to be exceptions, which creates grey areas and opportunities for conflict.