> Most of the modern, big conspiracies have been thoroughly debunked
I'd argue this is purely selection bias. I think the biggest modern conspiracies are not yet called conspiracies by the public zeitgeist.
Ex. Remember Jeff Epstein? I'm sure there are dozens of powerful people who hope you don't.
I think people believe in conspiracies, not because they're mislead on a certain topic, but because they want to believe. So debunking conspiracies is attacking their faith, which is what causes zealotry.
It's more like spreading a religion, which, yeah, you can't really ban it. You just have to let people do their thing.
tl;dr I agree that one shouldn't censor it, but only because it does no good.