In addition to identifying the network, the authors also calculate that taking down as few as ten influential accounts can halve the retweets of misinformation. I'm not convinced that it's quite that easy, because the network would respond and adapt, but it's still an eye-opening demonstration of the power of social media companies. The paper also finds that many misinformation accounts are not bots. Currently, misin…
There's also the question of what is misinformation? You have a continuum from differences of opinion, to people being mistaken, to deliberate misinformation. Where do you (reliably) draw the line? I can see why they wouldn't want them to be "arbiters of truth" -- I'm not sure I would want them to be either.
There might be better solutions. One idea is to pay nonpartisan organizations to fact check viral posts. Another is to reduce the use of engagement as a metric, which tends to promote emotionally charged rather than factual content. For example, in January Facebook committed to prioritizing "meaningful social interactions".