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

Let’s make some artificial rule like you need to be not on earth for 48 hours to be not on earth or something …
Can be at rest in your own reference frame without falling to earth?
Can I define my reference frame any way I want? Because if so, yes. And also no
From your own reference frame, wouldn’t earth be falling to you? Because then this’d apply to everyone, always.