Existence must have a location…that is, if something exists, it must exist somewhere. And somewhere must be relative. Otherwise, there is no distinction between the thing said to exist and where it exists. It simply exists where it is itself.
But to say something exists at the place of itself is nonsensical. “Itself” is not an answer to the question: “Where does a thing exists?” In fact, such an answer really translates to nowhere. In other words, if a thing doesn’t have a specific location other than itself, it doesn’t have a location at all, because “itself” isn’t a location, it’s a definition. And if a thing does not exist in a location then it doesn’t exist anywhere. And if it doesn’t exist anywhere then it cannot be said to exist at all.
Therefore, everything said to exist must exist in a location relative to something else. This makes any given object’s existence co-dependent upon the existence of another object (or other objects). Which means that existence cannot be the metaphysical primary. Because it is not singular.