No, not really. An atheist has to give a valid explanation for why he don't believe in Visnu, Thor, JHWH and the other gods. Which is probably the same exact explanation that many theist will give when asked why they believe in one god and not in another. Any theist is atheist for all the hundreds of gods he don't believe in, an atheist just goes one god further. The explanation you ask is more a thing that you can ask to a theoretical physicist. As for the creator, you may have good reason to believe in it when you'll se one. But in hundreds of thousands years of human evolution and in several thousands of human history, despite many said to have seen, talked or have a personal relationship with many different gods, nobody has been able to prove it, so it's hard to believe in what they say.