This guy is braindead fuck ass retarded.
Rockets carry more liquid oxygen than propellant. ITS A BIG FUCKING DEAL. Like 3-6 times as much oxygen as you carry propellant. You can see spacex and blue origin live streams. You can literally see starlink sats and the ISS with your eyes.
God damn. Literally all a rocket engine does is combine oxygen and propellant. Rockets can't burn in space without oxygen ðŸ˜ðŸ˜ yeah buddy, correct. All you have to do is watch a 15 minute video once..
The red is oxygen: 
