Why atheism is important, and why religion is dangerous

[causal code]

We need to promote rational thinking -- if we do, atheism and theism will sort themselves out.

Yes, and a non trivial portion of rational thinking, deals with rejecting deities, (i.e. atheism) especially in our unfortunately God-ridden / Plentifully religious world.

Maybe in another world, where some required flavour of rational thinking was hypothetically needed to oppose some other large (but non-religious) foolishness... atheism would not be relevant in that world.

However that hypothetical world is not our highly religious world, and this is why atheism is important.