When it comes to religions, I think evolution has helped tremendously. The creation myth, Adam and Eve, does not correspond to the real world for example.
Adam and Eve isn't universal. One only has to study the world religions to discover that this phenomenon of Adam and Eve is lacalised to the Abrahamic and "theist" account of human creation. A cursory glance at anthropology soon shows creation myths of other people outside the Middle East and Arabian peninsula. Thus showing it's man made nature, without having to invoke evolution.
When it comes to God, I think evolution has helped to negate some of the points made in favour of a God. For example an Intelligent Creator. Or even signs of a guided creation. In the case of God(s), I think evolution has helped less. But that’s only because science deals only with what we can observe. You cant prove/disprove something we can’t observe.
Empirically no, the whole point of atheism is non-belief, it doesn't have to prove anything. Philosophy and reason simply show the fallacies of supporting a belief in God grounded in reason as superfluous. If one want's to "leap" to faith then that's all it is a leap. No truth claim can be made from it.
So yes I am inclined to agree that philosophy can help, especially for my second point. I guess I need to read more about atheism.
I think I have already pointed some books out to you on this subject. I would also read about world religions just to show you that other than "theism" there are many other "ism's" which show the huge myriad and proliferation of religions throughout history. It will also take you away from speaking the language of judaism/xtianity and islam.