It was a private company that decided not to provide their refueling services to the American Navy, not the Norwegian government. What the government is saying is that they will not be not doing the same that Haltbakk Bunkers is doing. But this company stays firm. The practical effects will probably be minimal, since they are an important but rather small actor in the sector. But as a Norwegian, I am proud of them! (And not so much of my government).
I don’t think this is concerning because an European is affected. It is concerning because is happening to a tourist that clearly was going to return home, that the conditions in these centers are terrible for everyone there, and that at least some of these detention centers are run by for-profit private companies. It is no secret that the immigration system in the US is broken and is pretty much inhumane. It goes beyond who is in the White House, and speaks volumes on how broken the American society is.
I have been following some of these movements in the last few weeks and, at least the ones I know of, include FOSS in the alternatives to American products and services. So while I support what you say 100%, in my experience so far, it looks like most people are aware of this.