Your post is macabre. By your logic, fires would start instantaneously every minute of the day.
If this was sixty years ago, you would have been laughed out of grammar school, high school, college and any other place educated people discussed simple science.
Now, you’re either brainwashed, braindead or a Deep State paid troll.
Take liquid oxygen and liquid hydrogen, put them together, and add a spark, and you will get ignition
“Your post is macabre.”
Rocket engines don’t need atmospheric oxygen.