I get that this is posted to show that the "Art of the deal" has produced little novelties in the recent US-Denmark agreement:
https://www.bbc.com/news/articles/c63d7lexyym1o
It does have the novelty that even under independence the US will continue to operate the bases. I'm not sure if Denmark thinks this is a poison pill for any independence movement.
The Golden Dome bases in Greenland are such a stupid pretext:
1) Russia has the Sarmat missile that flies over the South Pole and completely evades all northern installations.
2) Russia has the Poseidon nuclear torpedo that threatens the vast coastal areas of the US and is immune all that as well.