Hmm, I think this logic kinda fails because if astronauts are “not on earth”, then neither are air travelers.

Astronauts orbiting earth are just couple kilometers higher altitude

I mean 30,000 feet is 9km. The Kármán line is 100km. The ISS is at an average altitude of 400km.

It’s a bit like saying people in planes don’t count as flying because then people on trampolines should count.

Are you saying that people jumping ARE on earth? Because I disagree.
They’re clearly not “jumping” they’re pushing the earth away
That’s relatively true
Are there enough trampolines on earth that we could reasonably expect that at any time there is at least one person in the upper part of their jump on a trampoline?