Did you mean unchallenged? Either way I agree, when I encounter people who believe things that are provably untrue, their views should be changed.
It's not always possible, but even then, challenging those ideas and putting the counterarguments right next to the insanity, inoculates or at least reduces the chance that other readers might take what the deranged have to say seriously.
Oh wow. This seems to do exactly what I've been looking for. Works with nordic languages, and with a longtap layer for numbers and symbols, so for my purposes seems perfect at a glance.