I mean we have academia, which is essentially secular study. Moreover Atheist don't need to go to church together to indoctrinate their beliefs, that happens every day when no miracles happen and the world continues to be kill or be killed anywhere animal intelligence has not overcome that reality in some small pocket. Atheist also tend to understand that their is no forgiveness and they have to sit with their actions for the rest of their limited days, so it's not a great idea to go out and do terrible things for treasure.
"I mean we have academia, which is essentially secular study."
It should be, but is it? If this is the case, why has the reproducibility of papers fallen off by so much? In the past, this wasn't the case but it also wasn't the case that society was so secular. In fact, secularism and inability to publish reproducible papers is positively correlated. While I'm not a believer, it does seem to me that somehow without religion, ethics at a society wide level falls off a cliff. I think those non-reproducible papers come from people with no real ethical or moral grounding. In the past I think this grounding was provided by religion. I don't have to like it to be honest enough to see it is how humans actually work. I'm not sure why anyone who is being honest would think that's weird or wrong.