Many atheists still hold the erroneous conception that religions are basically a failed epistemology, or a failed pseudo-science. What they do not see: Religion it is a way to live, and life is more than reason and intellect.
(Many religions do not even focus on beliefs but on practices, and even scholars like sociologist Christian Smith treats beliefs as secondary.)
A consequence of this common misconception is the view that a religion is a set of tenets, because that view allows some atheists to ridicule religious people (true: religious tenets are unfounded and obsolete; scientific tenets are well-founded; pointing that out is like shooting fish in a barrel).
What many do not understand: If, say, Christianity was basically a set of tenets, ALL intelligent people with a modicum of scientific education would ditch religion immediately and switch to the naturalistic world-view of modern science.
The meaning of religious faith and life is fundamentally different from what many atheists think it is. And that is a problem because both sides are talking at cross purposes.