Deceptive people can use words however they want!

So can you or I. At least a quarter billion people say “America” and mean “United States of America” every day, and at least a quarter billion people hear them say it and understand what they mean. Therefore, the meaning of that word has skewed.

If you picture an “American” in your mind I know damn well the first thing that pops into your head is not a resident of Brazil, and that is what language is actually about. Moving ideas, not definitions.