Bonkers question. Can't even figure out living on Earth sustainably and you want to talk about doing it without gravity, an atmosphere or an ionosphere?
No you're just a settler brain dipshit that gets uncomfortable getting called out, the fact you are an Aussie calling someone else westerner is fucking rich lmao.
If they had said "actually I am from x" I could have engaged differently. But frankly it doesn't matter because they are getting very defensive and calling others westerners without even saying where they are from. They certainly don't have to I aint fishing for personal info or anything but given the surrounding context I could not help but respond the way I did.