I think we have to be careful with banning. Nobody anywhere has only rational beliefs. Everybody has biases. Tons and tons of supplements taken by people here have virtually no evidence for it, even less than the already questionable rapamycin. Whole threads about various peptides that people gobble up, I find horrifying, but I say nothing. Should we ban all that? There would be nobody left, including you and me.
The fundamental issue is that we are operating in an environment of imperfect information. Back in the day, I was interested in game theory, and the mathematical strategies one can use in situations of information assymetry and probability behavior. It’s really shocking how bad human beings are when it comes to making decisions in environments with limited information. Everyone thinks that their “intuition” is reliable compared to others - and it’s purely psychological, when put to the test in game theory, your intuition is just as poor as the other guy’s.
Bad reasoning, and faulty conceptual analysis 101 is rife on these boards. When I was an idealistic youth studying for my philosophy degree, I thought that all schools should teach the fundamentals of conceptual analysis as a sort of vaccine against misinformation and a guide to making decisions. I have long since given up. I think you cannot change human nature.
It comes down to a cast of mind. Those who have a conspiratorial cast of mind will always have it, and even if you somehow persuade them of the nuttiness of one particular belief (say, anti-vaxx), they’ll just as easily fall for another one. It’s like they have a weak intellectual immune system, and are easily overwhelmed by viral ideas. The human brain is a pattern recognition machine, but many people are unable to then interrogate the validity of any perceived pattern, and soon the faulty idea based on this consumes their mind - you might find a paxlovid for that particular idea, but it’s not effective against the next one, because they have a weakness in their intellectual immune system. Now, with early education, you can train that immune system as with childhood vaccines, and hopefully provide lifelong immunity against stuff like Nazism, but new generations may have not been exposed to this world wide disaster and it makes a comeback like polio. The guy who today believes that vaccines are a plot, is the same guy who believed that soap was a plot back in the day, or that witches or jews/x are casting spells in league with the devil, so burn them at the stake. They’ve always been with us and always will be. There is no cure, because it is human nature.
We are all “sinners” who hold some poorly justified beliefs and intuitions because we operate with imperfect information. As long as the boards maintain a decent signal to noise ratio, we can allow exotic views, but there is no reason why behavior standards should not be enforced, wrt. personal attacks etc. I personally just skip posts and posters where it’s just noise, I have no time, energy or will to engage. But that’s a broad category - noise is not just the obvious flat earthers, but the guy who frequently posts stuff devoid of any value, but shrouded in scientific lingo and apparent preoccupation with “science”, but which upon examination have no content of value, it’s a kind of psychological need for them to “participate” socially, but sadly having little of value to contribute they pass along counterfeit currency - I refuse transactions with them. My point is, noise comes in many frequencies, and anti-vaxxers are just one band, but there are many other frequencies and you can’t ban them all, you can only mute them.