[Ajedi32]

Uh... what? Whose idea, exactly? Because that's an absolutely terrible idea. Altitude-induced hypoxia isn't like some kind of controlled medical anesthesia. If all the passengers fall unconscious from it then it's neigh certain that at least some of them are going to die. That's why commercial airplanes have emergency oxygen masks for passengers, not just the pilot.

If both passengers and the pilot aren't being supplied with enough oxygen to remain conscious 100% of the time, then something has gone horribly wrong. If the reason passengers aren't being supplied with enough oxygen to remain conscious is because the pilot cut off their air supply intentionally, then that's even worse. (Though again, thankfully that situation seems to be extremely rare.)