User blog comment:Benatius/Japan's name change/@comment-34246601-20180609165257

For the same grounds that you wouldn't overset someone's name. (So let's say that you meet someone named "Dimitri". That is only his name, his title, so you would not overset it to "Earthmother"!)

"Japan" is a name in the same way, ond it can only mean that one land.