If the logical conclusion of atheism is X, then X is a requirement of atheism. :tongue:Reducing humans to a arrangement of atoms is not a requirement of atheism, it is the logical conclusion of all atheism when atheism means there is no deity, no God.
I'll accept that it's the logical conclusion of materialism, but you said you were talking about atheism, not materialism. If you want to use the materialistic hypothesis as proof of your claim, then you're going to have to prove that materialism is the logical conclusion of atheism. :tongue:
You're going to have a hard time, because counterexamples abound. Solipsism is a good one.