It's something I'm getting used to on here. That attitude. Doesn't surprise me your comment was downvoted.

The very word "American" is presumptuous. Imagine if the Chinese referred to themselves as "Asians" and their country as "Asia".

I've taken to using estadounidense until something better comes along in English. ..or Spanish becomes the main language in the US :-) Australian English has/had the rather pungent seppo - rhyming slang for septic tank = Yank. But estadounidense is at least accurate.