Obviously its just for the challenge since pi5 has 8gb models aready

Android is a Linux distro, just because its not gnu or running whatever subset of features a desktop Linux might have doesn’t make it any less of a Linux distro.

The real question is what do you consider a part of a “Linux disto” that currently isn’t available on android?

“Monero is useless if you have to set up PayPal.”

Meaning they already know your identity because of PayPal(or other required kyc), so using xmr doesnt have any benefit at that point.