According to the rules for disputes on OpenStreetMap (https://wiki.openstreetmap.org/wiki/Disputes), the name of a disputed territory must be chosen according to the language used by the inhabitants of the territory. There is no question that the inhabitants of the Falkland Islands speak English, so the name "Falkland Islands" must be retained. See also https://www.openstreetmap.org/relation/2185374/ --> note:name