Yeah, it's particularly annoying considering there are a couple of entities that exist exclusively on Level 0, meaning according to itself those don't exist. It would be so easy to change it to imply that they exist, but due to the infinite size of the level it is incredibly unlikely that a wanderer would encounter one. The article even references that it is possible to hear something else in Level 0; "If you see, hear, or encounter what you believe to be another wanderer, it is not a human."
I didn't mind the MEG base though, as manila rooms can have multiple people in them, rather than everyone being in their own "instance" of the area, like in the rest of Level 0. It is even mentioned somewhere that the MEG leaves helpful notes and explanations of the backrooms and how to survive in manila rooms to assist new wanderers.