Joshua, physical facts and objects— as distinct from mathematical or logical one — have causal powers. That’s how we discriminate between them. So when Goff says that elemental consciousness has no empirical implications, he is saying that it is causally inert. To me that’s the same as saying that it doesn’t exist.
There are certainly unobservable empirical facts about the universe. They are still facts, but they are epistemically inaccessible to us. But Goff is making a metaphysical, not an epistemological, claim. I hope this helps clarifying my position.