It's such a common take that I've see it here, usually something like "obviously religion is why we have endless war" with the implication that if only everyone was atheist with no other changes wars would disappear in a cloud of euphoria.

EDIT: I misread your post, but while standing by what I said, I also agree that it's pretty common to blame lack of religion for whatever societal problems the religion enjoyer wants to blame.

Not just lack of religion. Anything but the mainstream also gets pointed to. If you're from one or more "pagan" religions (e.g., luciferianism, satanism, hermeticism, wicca, göetia, neo-hellenism, gnosticism, umbanda/kimbanda/candomblé, new age, or simply a free non-conformist esoteric/occult person as I am as a worshipper of the Dark Mother Goddess), most people tend (not everyone, so it's not a generalized rule) to have a suspicious look at ya, even atheists (again, no intention of generalize here). I'm saying that because I was once an atheist, I was once christian and now I'm a "pagan" person, and I've been noticing the religious biases of the society against esoteric beliefs. For example, in my country, a syncretic Kimbanda temple tried to raise a statue for Lucifer, the light-bringer (Lux ferre), and the city hall stopped the temple of rising the statue, because people saw it as something "diabolical".