>>58034026It's not just story, its EVERYTHING.
If you wanted to add a battle facility or something later in development, all the dialogue for confirming your choices or opponent phrases and stuff would need to have already been made WAY ahead of time so that the localization has time to add it themselves.
Worldwide releases generally have, in my experience with tons of japanese games, always resulted in less content overall, since you can add more content a lot later when you dont have to worry about the localization having enough time to translate it.