The definition of religion:
the service and worship of God(s) or the supernatural - Merriam Webster
So pretty much everything you said was wrong. There is no "claim" in the idea of atheism, we don't believe in a god or gods, I'm even an agnostic atheist, I don't see evidence to believe there to be a god, and I doubt that we'd be able to verify the claims if there is one. We aren't the ones who need to assert evidence, we're skeptics clearly your idea of what an atheist is, is more alined with that of an anti-theist. There is no "dogma" uniting atheists, other than the fact that all don't believe in a god, its like saying all you non-smokers! There are "strong" atheists and "weak" atheists varying on their viewpoints but you seem content to clump them into one. Science and evolution are not tenants of atheism, theres even a few young earth atheists, which is quite bizzare, but there are a few out there.
You seem to have a lot of misconceptions and demonized viewpoints of atheists.
Once again atheism is as much of a religion as not smoking is a habit.
You can insist otherwise but it would be like me screaming right is left and left is right.