In real testing, the motor models fire in a vacuum and the vacuum is maintained by constantly pulling out the expressed gasses as they come from the test models, there-by maintaining the vacuum pressures as the scale model motors are tested. Geez everyone else is dumb but you....
Except that’s not what happened in the vacuum test I posted. The gasses weren’t removed, therefore it was not a vacuum.
Again, no fire/ignition/thrust in a vacuum.
The skin would be ripped off your face in the “endless vacuum of space” with the same speed oxidizer molecules would disperse all over the “endless vacuum of space” before a fire could be lit; we’ve been hoaxed, sorry.
I didn’t use your pejorative “dumb”; I try never to confuse ignorance with stupidity.