Currently Denmark participates in financing Greenland, pulling the rug on it would likely not be pleasant for the greenlanders and if they did I'd count that as rather dickish unless the greenlanders had a near consensus on the issue and asked the danish parliament to do it.

Well, some justice have been sought and won, but a lot remains. To me it seems like an attempt at distraction to clump together the treatment of the Mau Mau and the nuking of Algeria with Denmark's relation with Greenland.

Besides economic relations, independence for Greenland would also mean that they would need to seek justice to a larger extent through international courts and in at least some cases it's likely easier for greenlanders to find justice in danish courts.