TIL: you can beat Stormy Ascent before N. Sanity Beach

I started a new game, and found out that it's possible to gem and platinum Stormy Ascent before even collecting a single wumpa fruit from N. Sanity Beach. I can only imagine that it's because people might be angry if they were to download DLC that they couldn't play right away. Either way, I'd prefer no warp, and a direct branch upwards from The Great Hall instead. There should have been a third key at the end of The Great Hall, so that after you've collected 'all' of the gems, you can finally play Stormy Ascent.