Earlier quoted context omitted.
The USA calling itself America and claiming only its citizens can be called Americans, when really all people from Canada to southern Argentina are Americans. Europeans live on the continent of Europe, Africans in Africa, Asians in Asia etc. People counter with Canada, Mexico etc. are in North America and South America so why isn't the USA the USNA?
How about, because we're the only country on both continents that bothered to put "America" in their name?
Imagine if one country on the continent of Europe calls themselves Europeans and tells everyone else they aren't allowed to.