You admit a scientific fact , which you call " cherry pick". This is real scientific fact gained through observation and explained with the laws of physics.
The cherry picking is citing some science in this area but ignoring science that deals with things like, say, gravity which most FE models deny.
Gravity is not the subject here.
You bluster about proof being a video showing rocket engines working in a vacuum ( after they have been changed into bombs ). Then you post a link to a forum full of waffle
The waffle was to explain the difference between the free expansion lackey is describing and what a rocket does.
The video was clear enough, I note that in lackey's response he has continued to lie about it and at this stage it's clear he's just trolling so I won't bother responding further.
It is evident you have no meaningful response.
You posted a video of some guy tapping a malfunctioning gauge, with absolutely nothing resembling anything close to a rocket in operation, boasting, "HEY!!! HERE IS PROOF A ROCKET CAN WORK IN A VACUUM!"
The link you provided was a forum formed of people on the Internet discussing free expansion, stating that could not possibly apply to a rocket in space, and who cannot understand that a pressurized gas container located in a vacuum, when allowed to vent, discharge, or eject its contents into that vacuum, will simply lie there.
Won't move a lick.
If you could somehow first set it in motion and then introduce it to the vacuum environment, it will maintain the momentum that it had on arrival (until some other force acts on it), but any further release of gas could not and would not be that force, because of the science of free expansion.
You can call me a troll if you like, but that statement is shown to have the same amount of substance as the supposed rocket proof video.