LOL! The way you phrased it, yes.
"Not by positing a Brahma in an egg as the beginning of things."
Not even by positing a Singularity???
A Singularity doesn't prove your creation myth.
Now how about answering the question? It's germane to your contention that Creation is a "myth".
Cosmology is a scientific endeavor using scientific methods. You say that the Biblical creation myth is truth. I say it is a Brahma in an egg. Both are equally true. And neither is science nor provable.
You can't win this one. You are out of the game.