Irrespective of whether the new pope should have made a statement re the Falklands, I agree with Greatnan - I don't think it was worth all those people on both sides being killed, maimed or traumatised for life.
People will no doubt cite the rights of the Falklanders and the recent vote in which 99% of them voted to stay as part of the UK.
If we were consistent in protecting the rights of people, we would not have allowed the removal, at the US's request, of around 2,000 inhabitants of Diego Garcia in the early 70's. The island was commandeered for US military purposes - the islanders were given no say at all in the matter and were shipped off to Mauritius. They were told that they could return at some point, but a Marine Protected Area was then established, which included Diego Garcia, and they have been told they can never return.