Recognize, however, that it does annoy those of us outside America when something very straightforward — like the ö in my friend's name, or writing £ — doesn't work. Imagine moving to a hypothetical country with no letter C, and being told your name "must" be kryptonektor, or instead seeing %ryptone%tor.
It's fairly common for a lot of computer software to standardize on American English and American conventions, yet several of these are unique to under 1% of the world's population. This morning, a new installation of Microsoft Outlook asked for a location and timezone, yet still showed the weather for Washington DC in Fahrenheit above the calendar. The weather location was easily changed, but not the units. A well-known messaging app I installed last week shows my location as "K%©benhavn", for someone in Russia no character in the location is intelligible. A receipt from a restaurant in Europe has only about a 95% chance of correctly showing €, and maybe a 1/50 chance of showing the date in the wrong order. On an international flight between two non-English places, it's fairly common for the in-flight display to show miles and Fahrenheit with English, which I don't understand, and kilometres and Celsius with (say) Arabic, which I can't understand either — along with the other 99% of non-American connecting passengers.
I have no issue with the minor spelling differences and changes of idiom.
So yes, we mostly understand the Americans, except their measuring units and paper sizes.
> The same should go the other way around.
But it often doesn't.