Can't agree with that. - The universe is the creation, and God exists outside of the creation. Earth is the physical center, and the reason for all the rest that lies beyond it. The physical creation is temporary, and when we transcend the physical, then God will be indeed the center for all of us.
The spiritual Jerusalem is the mother of all the spiritual and it comes down from Heaven, intersecting this dimension, as above, so below.
Spiritual man's relationship to God is at the center of where the 2 Jerusalems meet, above and below.