It's not really a "squeeze".
The Danes agreed that Greenland can become independent if supported by a national referendum. Apparently there is a decent amount of interest in that idea.
So the US can come in and say "hey, instead of independent, you could be in a union with the US". There is enough interest in that that it's a serious concern for the Danes.
> they're concerned because a violent, hegemonic imperialist superpower
To be fair we learned it from watching Dad (England).
> unstable authoritarian regime
How is it unstable?
> apparently just because
Territorial waters and exclusive economic zone claims grant amazing access to the arctic.
> something the US wants
It's really just the moneyed interests inside of it. China and Russia seem to have the same bent for the same reasons. It was recently unusual in Iraq since the federal corruption had risen to such a level, enabled by 9/11, that lackies for these interests somehow found themselves directly employed by government.
I prefer nuance over hyperbole.
The Danes aren't concerned because there's enough interest, they're concerned because a violent, hegemonic imperialist superpower run by an unstable authoritarian regime has decided Greenland should be theirs, apparently just because, and historically speaking having something the US wants means your cities get liberated into smoking rubble.