There is confusion here because Greenland is not part of the EU directly (they were, they left) https://en.wikipedia.org/wiki/Greenland_and_the_European_Uni... Its citizens are members of the EU but its territory is not. Greenland is part of NATO though, and has a trade alliance with the EU so its territorial status is very complicated.

It's always disappointing to see that level of aggressive ignorance on HN. I flagged your comment because you're lying and spreading misinformation. Greenland is associated to the European Union but is is not and never has been part of the European Union; it was previously part of the predecessor organization the European Communities but withdrew before the EU was founded. Next time take two seconds to look it up.