How do you go from not believing that someone met bob yesterday to an ethical or unethical action? Maybe if someone said, “There’s a ghost outside that has a gun and is killing everyone, and I didn’t believe you and went outside and got shot.” But that resulted in my death by not believing an anecdotal story that is far from the norm of our reality. I still don’t see how that is a moral scenario other than you not attempting to physically stop me from walking outside. However, every single time in history, E-V-E-R-Y time we’ve investigated claims of the supernatural, it’s never, 0, nada, came back as evidence of the supernatural. How do you tell the difference between event A with supernatural involvement and event B without supernatural involvement? If we can not tell a difference, the default position is that there is no supernatural involvement and is indistinguishable from nonexistence. It is irresponsible and unethical to teach people otherwise. We have to be able to tell a difference to claim that there is anything else there.
Again you seem to be using “belief” as in “belief system” instead of “belief = conclusion”. I believe X because of (name removed by moderator)ut Y based on philosophy Z that I use to arrive at a belief/conclusion about those facts/data. Atheism is a conclusion on a single topic of a specific question, not a philosophical system.
You are describing an extreme version of the philosophy of Nihilism it seems to me.