Of course they were, these are strange experiences. I was bemused and looking for explanations after my sleep paralysis experiences. I found them. So can the people who have NDEs and OBEs, and indeed those who have other kinds of experiences which they are initially and erroneously inclined to attribute to the supernatural or the paranormal.
I have not suggested that they were.
So now they know what to call these experiences, just as I now know what to call my experiences of sleep paralysis, even though I'd never heard the term when I first had them.