It has nothing to do with ignorance. It’s a perfectly reasonable shortening of USA, which is why everyone, from everywhere, uses it. People against its use are

It has nothing to do with ignorance. It’s a perfectly reasonable shortening of USA, which is why everyone, from everywhere, uses it. People against its use are invariably anti-US, or massively insecure about their less-influential country in the Americas, or are just jerks looking to exert power over others via compelled speech. You seem like you’re all three. We’re gonna keep saying “America”, dweeb.