I think you meant %LOCALAPPDATA%

%APPDATA% points to roaming

This is not a Linux or Windows thing. It’s a lazy developer thing. It’s also another one of the ways that some devs will coddle the end-user because “learning a file directory system is hard.”

Billionaires are surveying like crazy over there

That’s assuming either Greenland or the US act in good faith. Pieces of paper and law aren’t magic forcefields that prevent something from happening. If Greenland needs to secure itself, expelling threats to their independence from its land isn’t going to hinge on a lease agreement.