Being from America the nation, obviously. I'm sure you're just being pedantic, but that is how it's used. I'm not sure why you feel a need to make a point about this.
Not trying to be pedantic, I’m still somewhat confused when I read “america” when referring to the United States of America. Reason being, everywhere outside of the US, we learn that America is the continent. People who are much less into reading forums in English, or with a high percentage of US readers, can get even more confused, specially when the context is as vague as in this specific response.
Except no one refers to "America, the continent". It's always North America, South America, The Americas, or possibly Central America (though that's not really a continent). Typically America is the nation. This is doubly true because there is really no other good term for a citizen; "United States Citizen" is verbose and somewhat clinical, and there is no such word as "United Statesian". That's part of what happens when you choose a name for a nation with more than one word.
