first “Americans” includes a vast number of countries
https://en.wikipedia.org/wiki/List_of_countries_in_the_Americas_by_population
propaganda was allowed to creep in due to lowered education standards, pollution, militarized police forces, and toxic culture that became toxic because it was hijacked by the same people that own the politicians that make the laws and policies that keep us all in here in the United States trapped a loop not of the citizens’ designs
Which of those countries has the word America in their name? Because there’s nothing else you can call people from the US. Every other country in the Americas has a different name unrelated to the continents.
And before you try to say it, people are never called by a form of the [Type of government] bit of the “of [Country name]”