I don't understand the point you're trying to make. What is even the point of generalising something to the Anglosphere if it is only applicable to North America?
Now now, don't enrage the Americans with logic. Everyone knows the Angles were Germans who moved to America to provide beer for the early settlers. https://en.wikipedia.org/wiki/Angles_(tribe)
I'm American and unafraid of logic. In fact it makes perfect sense to me to believe that the Angles were a good source for beer for early settlers.
In fact it probably explains the inscription on an old headstone that many considered to be a misspelling - "Gone to be an angle".
In this context I think the inscription fits perfectly for a poor soul who passed on to a better life where they expected to be able to find lots of beer after having spent their mortal life as a teetotaling Christian. If anyone asked about the spelling "error", their relatives could all claim it was misspelled while never revealing the truth that the departed really just wanted to enjoy a cold one after they had become a cold one.
But just say USA then? If you say anything else (however big a component of it the USA is) it just sounds pointedly like 'not just the USA but those others too'.
I don't talk about 'the former British Empire' or 'the Commonwealth' or something when I mean the UK. (Or in the other direction, 'GB' or 'England' pointedly exclude Northern Ireland or Wales & Scotland too. The St George flag (of England) has football hooliganism associations somewhat as a consequence of that.)