Localization is the opposite of inclusivity. When you isolate people into sub groups they do not interact. Keeping everyone on English makes everyone interact.
Localization prevents Person A from Playing with Person B, unless they have the same localized client, because they can not tell each other with button to click on, and when Person A wants to mention Aura they in fact need to say レディブルー for Person B to understand who they talk about.
And yes, localizers are stupid enough they always start translate names.
This also goes for GUI buttons, error messages etc, making it much much harder to overcome any language barrier when helping people. Even if you don’t understand a word a person is saying, as long as you get the English error message, you can often provide a chain of English buttons for them to click on to get rid of their issue. Once localized, you can only get help from local people experiencing the same error, vastly reducing the amount of helpers as well as likelihood for the error to have been experienced and known.
Eve once upon a time had Language channel for people, they were removed by CCP and replaced with some failed attempt at making players remake them, but new players can not find player channels to seek help. See fx EVE online has player language channels + EVE music + CQ screenshots and EVE Search - Bring back language channels - new players are comming .