Have you looked at any of the many polls or interviews that have been done of Greenlanders of their opinions? Any of the writings or anything else they've put out on the topic? All the polls I've seen have had the vast majority - at least 80% - be against the idea of the US taking them over. This has been asked repeatedly, for years, since Trump first brought up the idea in his first term. Nearly every writing and speech I've seen has been about them being tired of the threats and being treated like they are for sale. The only remarks I've seen in favour by Greenlanders has been around concerns that Denmark could not defend them against the US - the US is viewed as a threat, not welcome.
Your point seems to ignore all this and paternalistically presume what the peoples of Greenland want based on your own opinion. Framing this as what would be 'easier for the Danes', Danish pride, or Denmark thinking it has the moral high ground is also a little weird when it's simply the fact that none of the kingdoms of Denmark are for sale just like the US is not currently selling Puerto Rico or Alaska. As a US citizen, I'm really happy Denmark is pushing back (most USians aren't in favour of the US doing this either, and many of us prefer when the international community pushes back against the US government's crazy).
It's a laughable idea that the US could be bound to care at all about the people of Greenland when the US doesn't care for its own people now.
That articles is a good reminder that regardless of Denmark's reputation now, its government was and is much like every other. It isn't an argument that that the US would be no different to them when they've said otherwise.
Also - Inuit is an umbrella term, like Native American or European. Discussing 'Inuit culture' is like discussing 'European culture'. There are actually multiple people groups that make up that 88% Inuit - and none of them are from Iceland.
Lastly, one of Trump's latest argument for this is that Russia or China is going to take over Greenland and the US doesn't want to be neighbours with them. Russia is closer to the US than Greenland is, hence why the jokes about the US government used to be 'I can see Russia from my front porch'. While Denmark may not care about Greenland in the way it should, the US government definitely won't.