That is what the forced flag is for. Anyone who is not marking their signs & songs track as forced is doing it wrong.
If you have your preferred audio set to English it will automatically use the forced track.
If you have your preferred audio set to Japanese it will automatically use the non-forced track.
https://thewiki.moe/advanced/release-standards/#forced-subtitles
As for why I set English as default instead of Japanese, it is because I originally looked at what CTR did and copied it.
I do not even watch in English myself but my releases are geared towards people who use Plex, Jellyfin, or Emby and want a Netflix-like experience.
I have thought about changing it but I think it makes more sense to keep it consistent across my releases.
If you have your preferred language set to Japanese like I do you there is no functional difference.
Comments - 4
martinxk
Moses35i
Yurasuka (uploader)
maxotaku