Well, if this simulation is being run by a geek in his mother's basement he would be all knowing and all powerful as far as we are concerned. You could call him a "god" in the ordinary human made up sense of the term.

He would not be THE God whom we have come to know and love because of what He has revealed about Himself.

But again, I'm only seeking to point out that scientific "proof" that things appear to be older that 6000 years merely eliminates the most obvious possibilities about how everything works. (It assumes that the creation process is constrained the internal rules of the universe.)

It does not prove that the Biblical account of creation is false, just that Science has made different assumptions - including that the visible universe is not a simulation or a divine thought experiment. (Google "the simulation hypothesis" to see that some scientists do view simulation as a plausible way to explain observed quantum entanglement and particle-wave duality.)