At 35,000 feet the outside air pressure is about 3.5 lbs. per square inch. If the cabin is pressurized to 7000 feet equivalent, the interior pressure is about 11.5 lbs. per square inch. The pressure differential is therefore 8 lbs. per square inch. Assuming the door is 3 feet by 7 feet (3024 square inches), the pressure on the door is slightly over 24,000 lbs. Given that the door must be initially opened inward, it is inconceivable that a door could be opened by a person.
No disagreement but 1. The myth wasn’t about whether or not the door could be opened. 2. The myth was what happened if the door was opened.
The article covers 1 as a way of refuting 2. The article did directly refute 2. Opening the door is risky but there is no risk of the door being opened.
This is why it is fun to scare people by stating very truthfully what would happen IF the door was opened.
It is a classic liberal scare tactic. Scare people with the consequences of something that is unlikely to ever happen. The proclaim we must take action.