I was addressing that to everyone, I'm sure. You've said that you're not denying the existence of devas, and claiming a reasoning for the Buddha to explain cosmology and the arising of life that is other than showing the real cosmology. You've been saying that. But the Buddha is said to be teacher of gods and to have taught the Brahma you've been talking about. All throughout the Canon. I don't see the base for you claim, anywhere. I'm trying to, but I don't see why you would have grounds to think this way unless you took the entire scripture at face value. And you might say that his teaching of awakening doesn't concern these things, but you can't read the teaching of awakening without standing neck-deep in devas and brahmas and hell, and rebirth.
And again the entire expanse of the Dhamma scripture quotes over and over again that the Buddha is a teacher of gods and men. His mother even became a devi in Tusita, upon dieing some time after the birth of Siddhatta. He teaches the Abhidhamma to her along with the other devas in Tavatimsa. He also claimed to know Sakka and lists the exact qualities required to become the King of the Gods (of Tavatimsa).
The Buddha was using the current representation of the world to explain the reality of the cosmological structure. The people would not have understand that the world was a sphere, they would not have understand galaxies, or galactic clusters, or the universe. So, he told them about their world, about how the solar system with its sun, moon, and earth forms, and how beings come to arise on earth. And he explained how the planes of existence rise to the top of all existence, above a thousand worlds, a thousand of those systems, a thousand of those systems.
Just because the Brahmanistic ideas were so similar to the real cosmos, doesn't mean that the Buddha was just fabricating something to convince them of their fallacy. What if the Buddha arose in such a time of those ideas to correct them? That is much more plausible, and it doesn't rip apart the scripture, either.
Sometimes no Buddhas arise in the world. Sometimes they do. When it happens, it is for the welfare and happiness of men, out of compassion for all creatures. For a long, long time he has been working to become a Buddha. He met other Buddhas along the way. And after his long striving he attains his final life, yet not without showing everyone else how to get there.