Yes i get that

But we also live on an oblong sphere, which is 3 dimensional

The axes of north and south, east and west, are two dimensional

If you have a ship that can sail through anything, with infinite provisions, and you sail past the south pole, you will end up going north. That doesnt suddenly discount the fact that up until a certain point, you were going south. If the sea is immediately around the island, which it is, and is on the opposite side of the exact point of the axis, i wouldnt call that a misnomer.

When you are in that area you’re essentially sailing south until you’re sailing north. If we came at it from the other side it would likely be called something different.