I will answer that question, if you don’t mind.
I would call him a believer in theology and not in God. Today’s theologians’ God resides in the outskirts of the universe and not in the holy scriptures.
In every generation of the past, theologians’ gods were always a step ahead of the ordinary gods of their time. In essence, the definition for God varies with time.
Creation of people according to the ancient Near Eastern theology, for example, was originally realized by a goddess whom the gods summoned for the job. Later, when the ancient theologians decided to dispense with the goddess, a god was producing offspring through masturbation and when sex eventually was entirely banned, the god was creating humans in the potter’s wheel.
So, when we are arguing for or against the existence of God we are referring to today’s God who will definitely not exist for the people of the next or the one after the next generation.