I think we could turn the Guardian article's premise around (as this article hints to) and say "it's dangerous to think people shouldn't be allowed to think about or experience wrong things."

It's obvious slippery slope arguments that lead to censorship and nanny states if not worse.

The correct answer is not to believe that everyone is a Netflix show away from being a conspiracy theorist, but to instead present the evidence against and counter arguments.

To add to that, if people do not trust the experts, it is not because wonky shows have created distrust, it is because the experts and authorities are not behaving honestly. People aren't as stupid as the Guardian author and authorities seem to think or want them to be. People enough lies and spin they start to wonder "what else are they lying about if this is the not-even-trying-to-hide-it stuff."

Hold authorities and experts to account, rather than patronise the population and then try to censor their displeasure.