I honestly don't know. I think in general though, we should try to make information be as available as possible. Most of the justification for regulations about communications content comes from a time when most people had only three television channels, and a few newspapers.

Also, China has used exactly the same justification for censoring their information. And they're not wrong. People do knowingly spread misinformation and harm others.

I think that it's a really tempting problem to want to solve. If we could just find some heuristic to know for certain that something was "fake", we'd have it all figured out.