Hey talk to your buddies, they believe atheism is a culture,ethics,values or a formed ideology. They openly cite that their disbelief in God comes from disagreement with lifestyle choices.
Disbelief in God is strictly metaphysical, not something linked to lifestyle.
They don't deal with the existence or non-existence of God or gods, but rather, it's almost always something along the lines of "Muslims did this, that, here and there, and they're immoral for doing so, therefore God can't exist".
Something like that anyway. And that's not a scientific argument that somehow disproves the existence of God. Yeah, people are idiots, and religious people are no different in this regard they are no more human, but how does that have any bearing on whether or not there is a higher power? Supernatural entities to be or not to be, is independent from their followers being dumb or intelligent.
Agnosticism is the real logical stance when it comes to this not Atheism.