The ability for something to be demonstrable is not dependent on human reach, it's an objective quality. Whether or not we were where 'god' is, it would either be demonstrable or not. If not, then it really doesn't get to qualify as an existent, because it is indistinguishable from a fiction.That is completely illogical.
If God exists, God would be out of human reach so humans could never demonstrate that God exists.
Humans do not have the ability to reach God, so only if God chose to demonstrate Himself could we ever see such a demonstration.
Again, indistinguishable from fiction.Well obviously, but God is not beyond existence, God is just beyond human reach.