Contents of said letter from daily beast: https://archive.is/YFBK3#selection-773.0-779.748
“Dear Jonas,” the president wrote to Norway’s prime minister, Jonas Gahr Støre. “Considering your Country decided not to give me the Nobel Peace Prize for having stopped 8 Wars PLUS, I no longer feel an obligation to think purely of Peace, although it will always be predominant, but can now think about what is good and proper for the United States of America. Denmark cannot protect that land from Russia or China, and why do they have a ‘right of ownership’ anyway? There are no written documents, it’s only that a boat landed there hundreds of years ago, but we had boats landing there, also. I have done more for NATO than any other person since its founding, and now, NATO should do something for the United States. The World is not secure unless we have Complete and Total Control of Greenland. Thank you! President DJT.”



As someone with experience with people who are in the MAGA reality bubble, this is because there is no in-canon explanation of Trump’s actions (yet, the story writers patch these up pretty quick). There was no setup for this, no laying the misinformation groundwork and no existing goal that this advances.
Since Greenland wasn’t part of the story, it just came out of nowhere. Lacking any in-MAGA explaination, they are examining this situation as a normal person who knows normal facts and this is completely an unforced error by any measure as anyone can see.
If this was something that was serious and planned then we would have started hearing about this months ago as they started preparing the lies and the misinformation seeding into social media via paid/artificial content creators or otherwise useful idiots. This is probably the strongest indication that Greenland is a distraction and not a real move. This is probably the case with Canada too, in my opinion.
They would rather people talk about anything but the Epstein files and how they are very clearly covering them up and not complying with the law. They don’t want reporters to have time to report on all of the people that he has pardoned who also have made $2-5 million dollar donations to various MAGA PACs, some of them committing even more crimes and getting another pardon…
They need to throw things into the air to distract people. Some of their planned events are polling negative (the Minnesota Invasion, Healthcare Subsidies) and they don’t have anything else so instead we get more random tariffs and more random military threats because they are something that the Executive Branch can do unilaterally and suddenly to ensure that they grab the next news cycle.
This is the “Flood the Zone” tactic that Steve Bannon said that they were using during the first admin.
He did start babbling about it early in his second failed term. And I did see attempts to sanewash this talk about Greenland in places like The Atlantic, for example.
But yeah, the messaging on this has been extremely scattershot.