Firstly, mental disorders aren't determined by cognitive positions or even behavior. I get that culture in the 2020s still likes to regard mental illness as something worthy of derision or contempt, but it's kinda like shitting on someone for being blind or deaf, and in the meantime, mental illness has real definitions beyond beliefs you don't like.

In the psychiatric sector, mental illness is defined when a given compulsion causes a living dysfunction. If I secretly believed the moon was made of green cheese, while that might be regarded as a provably counterfactual belief, I could hold it my entire life without it once impeding my life. So as much as you can disagree with religious beliefs, or disparage religious identity, equating it with clinical madness not only is inaccurate and ableist, but conflating religious hate movements with people who suffer from mental illness is also an insult to people suffer from mental illness. By far, those of us with diagnoses are actually trying to manage our madness, and be functional, moral people.

That said, having counterfactual beliefs is super common (let alone an internal model of nature that has few embarrassments -- you'd be hard pressed to find someone with a near-perfect internal model). When we talk about mental illness, the psych sector considers what is typical, and counterfactual beliefs are extremely typical, hence the reason newspapers and news sites still have horoscopes.

In fact, human beings contend with a wide range of cognitive and sensory biases that inform how they perceive the world in ways that do not reflect reality. I am confident even you, personally, struggle to grasp the actual breadth or age of the universe, and our place in it. We all do.

And that said, my own path to naturalism involved some not small existential crises and confrontation with not only my mortality but the infinitesimal breadth of my significance. We are tiny and brief, and I will forgive anyone who is not ready to confront how small and alone we are. (Or for that matter, how deterministic the path we carve through time.)

So, you know, you are free to do what you want, but I'm going to think it's a dick move to shit on people for their illusions, especially in a world like ours in which nature and society both teem with life suffering under parasitism.

When it comes to the fellow whose post you're attempting to reframe, I'm done with him. He'll figure things out in his own time -- or not, but I assume he will gain no useful ground through me. And I do understand that religious ministries -- speaking of parasitism -- manipulate people by the tens of millions to their detriment, causing a lot of preventable suffering. But that's something we have to change at the sociological level, not at the psychological. It's about humans having exploitable biases, not about a given person having a character failing by which they discard rationality.