Deism was condemned by Vatican I. Also, there is no reason to believe that the universe works like a deterministic mechanism. Why should people believe in a 19th century view of the physical universe as some kind of spiritual truth?
So, you are saying that God could not have known the result of His own creation if He utilized the Big Bang mechanism as described by science? I thought He was omnipotent. Also, Vatican I’s condemnation of deism does not imply that this idea is incorrect.
Further, I never stated that deism must hold universally or that everything in the universe is deterministic. Human free will throws a monkey wrench into things, and it is in the realm of human interaction that God would intervene. Why could He not have created the physical universe via a process where He set it all up and let it run? Why is there ANY spiritual significance to the method of creation of the physical universe anyway?