Only in the U.S./English.

If you refer to "America" in Spanish it's assumed you're referring to the continent, the state is commonly referred to as the United States or the United States of America.

We actually call ourselves Americans here in Uruguay.

https://es.wikipedia.org/wiki/Uso_de_la_palabra_americano

"En el uso tradicional a los naturales de América como continente.

En un segundo término, a los ciudadanos de Estados Unidos de América, uso derivado de la influencia lingüística inglesa."

And if you refer to "Spain" in Spanish, people will be similarly confused. But we're not speaking Spanish.

I checked the page source, and it turns out the entire article is written in English.

Yes i think that is common knowledge. But it is not a common thing in international economics news sites.