He hasn't even shown that they did get some stuff right. Again, at most he's trawled the text for a few phrases which look like they refer to the Big Bang and the expansion of the Universe and stapled them to a totally unsupported conclusion that this is what the storytellers were thinking of when they wrote this stuff down. It's all a grotesque non-sequitur argument from ignorance and he expects us either to prove it wrong or swallow it wholecloth. Unfortunately, it doesn't work like that.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'