I think that Great Britain has, generally speaking, done a good job in relinquishing its territories back to the native inhabitants.
The thing is that there were no native inhabitants in the Islands before the British colonization, they were up for grabs so to speak. The reason, as I mentioned above, is that they are no good in the eyes of a continental inhabitant. The only problem is that the islands are on the continental platform and thus, in theory, they are Argentine territory. If it weren't for that there would be no conflict at all.