Insults already? Listen I’ll say this slow so you understand this time. Everywhere in the world not just the west the final island’s true name has always been a secret. The true name isn’t revealed until Stampede. Yes stampede isn’t canon but that doesn’t matter when it comes to revealing things that happen or will happen in the canon story.

Your idea that it’s a translation error is incorrect, Oda uses the reveal of the islands true name as a story device… it’s an actual plot point that serves massive importance to the story. How could a translation error be used as a plot point when it exists in every translation of the story..