Way 22313896

It seems that this way does not exist. Am I correct?

It does exist it’s here :- https://www.openstreetmap.org/way/22313896#map=16/24.4354/-81.8055&layers=N

Though what it is is not stated.

The question is why someone mapped an island there. Sat images don’t it.

It looks like a very old mechanical import, from the source.