Of course, atheists say that all religions are all wrong. And because there are so many religions, atheists say there is no way of knowing which one would be correct even if one of them was correct. Well, that is a patently stupid thing to say.
Atheists, while confused on many things, are here confusing the difficulty of finding truth with the ability or possibility of finding truth. While the existence of many religions necessitates work and diligence in assessing their credibility, that is no excuse for saying that truth doesn’t exist or that it can’t be discerned.
Certainly different world-views give us different understandings of the human dilemma and its solutions. But to say that knowing opposing views eliminates the possibility of a solution existing or that we cannot not discover that solution is again, simply wrong. Nor does it mean that there’s nothing wrong with us. This flies in the face of atheism which is perhaps the least humble and most judgmental of all world-views.
Christianity, in my opinion, is the only world-view that accurately describes our problem and it is the only world-view that provides a solution - a solution that begins with our Creator, is carried out with our permission and is brought to completion by our Creator.