The people chanting “Death to America” didn’t mean Chile.
And I’m pretty sure they weren’t major consumers of American culture.
And Americans don’t commonly chant “America” any moment they get. They famously, and obnoxiously, chant U.S.A. every time they can.
The U.S. has been the most prominent nation in the region for generations, and most importantly, it’s the only country in the entire region that has the word America in it’s name.
People have reasons to talk about countries far more than continents, and reasons to talk about the USA more than most other countries.
The fact that America is commonly accepted as shorthand for the United States of America when there is no other country in the world with the word America is hardly cultural imperialism.
It’s an insult to people and nations that have actually suffered from imperialism to brand this as “cultural imperialism”.
The reason why we talk about USA way more than other countries are not what you seem to think.
Try getting on a news feed for a day and check the river of news, often very important, that are NOT reported in the USA because they're not important.
I have a serious problem with the obsession we have in Europe for example with American politics.
We live under this assumption that what happens in the USA shapes what happens everywhere else but that is only true to a much more limited extent than what coverage and media attention might suggest.
In fact for Europe I believe that what happens in China for example is right now way more important and impactful.
Not to mention Africa (check what's happening rn in Niger, for example).
Look the problem is simple. Every country is self-centered to an extent about its own topics, issues, and problems. USA is the only country that's absolutely and utterly convinced that when it comes to its own issues, than everyone else is not talking about anything else but that.
Especially in English.
For people who speak English as a second or third (etc) language, that can sometimes be a bit hard to grasp.
Eg in German, Amerika typically means the two continents (but confusingly can also mean the US of A).