I agree Boagie. Nietzsche was describing the intellectual or spiritual landscape of his times and in hindsight it turns out that he was quite prophetic.
But Nietzsche goes on to say that not only the Christian god but ALL metaphysical claims are merely human claims. He doesn't believe in any 'privileged' metaphysical claim. He sees such claims as a human created value. According to Nietzsche metaphysical claims do not posess an independent existence of their own. As he says in one of my favorite quotes from the book "The Will To Power"-:
"Truth is the kind of error without which a species could not survive."
Boagie, let me if you will post to two essays about Nietzsche that I have found to be rather instructive to me. I don't mean to be presumptuous but perhaps someone might benefit from reading them:
This first is from Animus: "A Philosophical Journal of Our Time": Neitzsche and the Religion of the Future
This second is a pair of lectures that are posted on line for students. The first lecture is an introduction to "Beyond Good and Evil". The second part is an overall review of Nietzsche's works and ideas. Here is the link:
Beyond Good and Evil