I can see where you're getting confused, honestly. Lemme see if I can word it well;

It's not exclusive, but the knowledge of it hasn't ICly been widespread, yet alone used by anyone save for the listed characters that do know of it. It's open to the public, but updates about it's condition since it was added just haven't been publicly spread yet.

Any actual updates will not go through until March, due to things not being finished. There's still more to be done as I've mentioned to the Zelda-player.