As a refutation I would simply draw your attention to the cases presented in THIS post (see the list of cases at the end of the post).Well THERE's your problem!
But seriously, Rramjet has such a low standard of evidence that it's worthless to cite anything he says on the matter. He is focused on quantity rather than quality because to him anecdotes count as evidence and the value of evidence is measured by weight - more stories means they must be true!.
KotA: - your thesis is at least an interesting one - that the gods spoken about in ancient times are actually ET. I think this connection might be of interest in such a thesis (http://www.bibleufo.com/zezekiel.htm) - as might an exploration of the ancient Mesopotamian "Oannes as alien" connection.