I don’t know what this does. It sounds as if it would turn the localization of genre names on or off Sure, it’s placed in the album editor, but it wouldn’t make sense to me if genre localization had to be switched for each album.
And indeed, if I go into one album and switch it off, it is off in all other albums as well. So doesn’t seem to be album-specific.
Edit: I recalled that I discussed this before:
But rereading this, I am still not quite sure that it does. FWIW, I already brought up German localization of genre in the posts further up in this linked thread
Sure, it’s placed in the album editor, but it wouldn’t make sense to me if genre localization had to be switched for each album.