These bottles are filled to 3000 -4000 psi and if the valve breaks off, the bottle becomes an unguided missile. If the bottle explodes it's like a bomb going off.
At our research lab back in the day a grad student was moving a compressed nitrogen tank from the gas racks to his lab with the cap off. The tank fell off the cart and the fall sheared the valve off the tank.
The tank was propelled through a steel door and went through a brick wall and several sheet rock walls before it stopped. It's very possible that compressed gas bottle failure was involved in the crash.
Quite possible..................
That’s been my theory since I saw the first video of the crash
“Oxygen” was my first thought.