Earlier quoted context omitted.
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.
The key part is probably the distinction between deliberate and accidental misinformation. Yes the latter can be problematic as well, but it would seem ridiculous to ban someone for simply making mistakes. Everyone does so, from professional journalists to average Joes on the street. Unfortunately, even if those pushing deliberate misinformation are banned, then the problem will keep going since others will spread th…
If you then decide to ban all misinformation (because false information is a problem even if it is a mistake), that goes back to the difficulty of deciding what is misinformation - people can cherry-pick true information in a way that gives a misleading impression, or if someone makes a statement that might be true, but there is no evidence for it, do you have to assume that it is false?
I agree that there is a problem here, but I don't know that banning misinformation is the right way to solve it - there are too many gray areas, and it grants _a lot_ of power to social media companies to let them determine what is true.