My sense is that the other motive to insist on "football" is the perception of American chauvinism. If a different country had their own name for the sport, I d

My sense is that the other motive to insist on "football" is the perception of American chauvinism. If a different country had their own name for the sport, I don't think you'd see people complain that they were being parochial or ignorant by using it.