We should measure harm and then fine the businesses that spread the harm.
Societies should teach people to recognize and deal with mis- and disinformation, rather than provide them faulty assumptions upon which to base their trust.
Add in biases and people are all to willing to discount the truth they dislike as propaganda etc.
It requires teaching people the tools to evaluate arguments, statements and media.
I don't claim anything wrt objective truth (though I tend to think there is one, but whether we're able to directly observe it and/or agree on it is another matter) – I'm claiming we have tools (knowledge, cognitive ability) to weed out obviously incoherent, illogical, biased, untrustworthy or otherwise bad thought.
Essentially, you can train people to deal with poor execution, but that’s not enough when the subtle stuff is equally if not more important.
However, bias can show up in what’s not reported just as easily and in that case their is nothing to detect.
But that doesn't mean that you should blindly trust some discriminator system (which we know can't make any technical guarantees, and comes with additional risks) instead of learning to reason about these things.