I've read about someone "exploring" the DMT realm with the machine elves by putting a hundred or so willing participants into that state and they found that multiple participants encountered the same machine elf, so there's more going on than just that.

Also, machine elves are not all humanoid. Some of them are complex geometrical shapes that are too complicated to parse. It was very fascinating to read about this phenomenon. I remember that what people described felt like some kind of Internet that is accesses with your consciousness.