I'm Sami, and that ID isn't a fake, it's yours. So far as I know nobody's trying to set you up and certainly not me, ain't got anything to gain by it.
You were just about right with the Dorothy analogy. You've been swept up by what the locals call The Vortex, and brought to a world that may be very much like your own, and may be surprisingly different. Most folk here were transplanted, same as you and I.