Interesting discussion about this on the OpenStreetMap forums.

The resolution is introducing “official_name” tags, referencing “en_us”, because “en” is not just the U.S.:

https://community.openstreetmap.org/t/gulf-of-america-gulf-of-mexico/124571/11

So when OsmAnd or OrganicMaps start to support them, maybe your locale settings will change the displayed name there as well.

Current description of that node: https://www.openstreetmap.org/node/305639190/history/80

So maybe that could be a reason for everyone around the world to stop using en_US locale settings. XD

The first phone I bought myself (I had others before, but they where hand-me-downs) was the N900, which should have been the next generation of smartphones/devices. But because of Microsoft and Stephen Elop it wasn’t.