My wife is an "Argie", although if I called her that she would probably thump me. Doesn't like the term Argentinian either. It was always Argentine to us, as in Spanish it is argentino, not argentiniano.
Flew to Dinard to spend last weekend in St Malo. On the way from the airport I asked the taxi driver if she was aware of the association between the malouins and the Iles Malouines. She hadn't a clue, and had never heard of the Falklands either.