I hate to say it, and I hate that this is true, but if a newbie spread false information about anything you'd be far more inclined to question it, but if it was a user like theymos as an example, you'd be far more likely to believe it without further investigation.
In Psychology we call this tendency "Authority bias". Pretty scary what authority figures (individuals or groups) can do and/or accomplish just because people perceive them as authority. As the saying goes "
with great power comes great responsibility", unless you're a politician or the mainstream media, then you can do whatever you want with that power, but I digress...
Why we give negative trust for Ponzi or fake casino?
Yeah, it's pretty clear, we are all aware that there is not that can give these economic gains.
Is not the same when someone is posting fake information and/or dangerous treatment about COVID19?
No one's gonna give
those users a neg tag (difference in opinions doesn't merit a neg tag), their posts are not going to be deleted (they're not breaking any rules AFAIK), and mods/admins will not prohibit discussing/posting such things like conspiracy theories or like you say "crappy arguments" in this forum because, as @Welsh said, censorship is a no go.
Now, can't you just put those users on your ignore list? Hear me out...It seems like this actually upsets you and it's understandable, you live in italy and we all know what's going on over there, but for your own mental health, just ignore those users, yeah? Seriously, the outbreak, the news, lockdowns, all of this is too stressful, but do you really want to add more stuff into that pile of negativity? Do you want to see your mental distress and anxiety increasing? I'll say it once more, ignore those users and avoid anything that makes you upset or anxious such as
those posts in the P&S board, and try to engage in something more positive, do it for your own mental and physical health. Stay safe!