I think the point here is the captain is responsible for an isolated pocket of humanity in a cabin. That captain is to take that cabin way up in the air, move it a lot, and get it back down safely.

And not all of the risks are about moving the cabin. Many of the risks are within the cabin and while some dickhead getting uppity at the pub will get collared by the police, it is a totally different problem while in the air.

So, while in the cabin, don't try to fuck around and find out. No one wants to find out anything. They just want to get to the other end of the trip.