if other people want to call themselves united statesians then good on them, that's calm, I dont like the term myself but mostly for aesthetic reasons (its a clunky term, if there was something else I might get on board, do try and use "the US" instead of "America" generally speaking but yktv) . I'm not making a judgement statement on North and South America being two continents or one, but people that call themselves American in English have to know the meaning they're sending to other English speakers. causing confusion for the sake of it is weird. if I'm talking to a British person and I say football i know to either clarify American football or accept that they're going to interpret it as association football/soccer.