I think you're kind of missing the important bit; there is no threat of invasion and there never has been. People just want reasons to be mad at Trump, and so they make things up
This is a dumb take. You're starting with "I don't take their threats seriously" and conflating it with "it didn't happen at all". But it did happen.
> The Trump administration threatened military action to take control of Greenland
https://en.wikipedia.org/wiki/Greenland_crisis#Annexation_th...