Depending on the amount that are out there, it could be possible that they are. I can't imagine what happened to them to make them into these..empty husks of humanity. Unless that is the form that they originally took and this place, Genessia, is something that an off worlder set up.

[They simply just didn't know enough about this place or the state that it was in before to say definitively what happened.]

For as many questions that have just been answered, so many more have arisen.