Friendly reminder that the intro skipping was found with glitchy codes active that had already had the person enter a file once to get a position saved to allow them to warp under the file select screen. The codes may mess with the loading in a way causing this to happen, and intro skip may not even exist. ;3 Just so that's clear. Could be possible, though!
This video was all but confirmed fake, in case anyone was wondering. No one has been able to replicate this despite the creator claiming that it could be done consistently (and making 2 videos of it, one of which showed obvious use of some sort of teleport code).
If you boot up the game with practice codes loaded and load a savestate without saving one previously, you will teleport to the exact same spot as in the video.