I would like to know something. Why do Americans like to clap when the plane lands? Because they're happy that they landed on a runway, not a building
Why are you bringing up 9/11?
I'm discussing a fact. A runway is much better than a building, so of course people should be happy to land on a runway not on a building.
911 is a traumatizing event for many people and it can be triggering to even talk to them about much less joke about. Making light about it can be hurtful, just like you would be hurt if people made a joke about something that caused you pain.
I'm sure a lot of people would find being in a plane crash funny.
It's wrong to joke about 9/11. Numerous people were killed and it is a trauma that the country is still healing from.