But none of these is dogmatic in the least. On the contrary, belief in the absence of any evidence at all in anything, be it gods (including Thor), supermen, leprechauns, fairies, all constitute the same sort of thing -- acceptance of an idea for which you have no evidence.
Unless you can provide some evidence that the creation story in Genesis happened in anything even remotely like the way it is therein described, then Genesis is indeed not history, nor any other sort of fact whatever. There is an absolutely immense amount of science available right now, on the internet, that can show you that, if you only looked. There is nothing but Genesis to refute all that science, all that patient learning and accumulation of knowledge, facts and evidence.
You need a better understanding of what the word "dogma" actually means, because I don't think it means what you think it does. DOGMA (noun): a principle or set of principles laid down by an authority as incontrovertibly true. That is to say, stuff you are to believe in the absence of evidence. And that's just what an acceptance of religious creeds and stories is.