A small group of loud atheists live it as it was a religion
And the rest of the atheists live it as part of the general religion of their lives.

Not really. You use the word religion in a way that is not acceptable by the rest of the world. All of the definitions of religion which I could find include a belief or faith in a god or the supernatural.
You've made up your own meaning for religion, which is simply "Anything on which you spend a lot of energy". This means everyone posting here has multiple religions - any hobby you have (such as correcting logical fallacies posted by forum members) becomes a religion to you.
By your own definition, you simply posting here regularly is a religion - you have at least two religions, maybe more.