That isn't a thing that happens anymore, because passengers don't tolerate anybody making trouble. This double-doors stuff is alarmist theater for a fabricated threat.
> passengers don't tolerate anybody making trouble
Examples of this? The shoe bomber is one, but the shoe bomber was solo. I don't know what a situation would look like in a 9/11 attack where you have 4-5 attackers. Esp in a widebody jet
Because the only example we have of passengers fighting back against multiple armed hijackers ended in flight 93. A single passenger is easy, see the shoe bomber. I don’t think everyone will get so righteous if 10 people were threatening a flight.
Armored flight deck doors are the real winner here