Er, not to get in the way of a good rant, but I didn’t see anything in the text you highlighted that suggested they were saying you would “die instantly.” They said that if you were exposed to these conditions, you would die quickly (which you would). The oxygen masks exist to make sure that you AREN’T exposed to these conditions for more than a few seconds.
That’s true. If the cabin depressurized at 35k, everyone who votes for Obama would sit there passively, O2 masks dangling in front of them, waiting for a government worker to come and help, so yes, they would all die.
Note that the oxygen mask doesn’t prevent ANY of the conditions they mention, EXCEPT for the lack of oxygen.
So apparently, the cold and the lack of pressure aren’t going to kill you very quickly. There is time for the pilot to bring the plane down to a safe altitude, so long as you can keep oxygen to your lungs.
SO I would call their rant “mostly false”.
The oxygen masks are basically for passenger comfort. Passengers can be exposed for two full minutes to complete depressurization. This is from the FAA. They also specify (like they would need to anyway) that this requires an emergency descent.
It’s critical that the flight crew mask up fast. But the passengers can sleep and will wake up fine after the emergency descent.
The oxygen masks would do little good at 35,000 feet. The low pressure and temperature would cause many other problems.