The devil is in the detail here, though. Who is going to decide what is misinformation and not? In all practical cases it would seem to be that this person and/or organization is soon going to be a censor. Also, truth is not quite enough to decide what is true, weirdly enough. There is a gazillion facts in the world and just by selecting a subset of these one can paint a rather different picture. Everybody has their own subset. Then there is the matter where facts end and interpretation begins. This line is never 100% clear. One could also philosophically argue that every fact is at leas partially interpretation. If I have noticed a subset of the gazillion facts and drawn a conclusion from that but you have noticed a different but potentially overlapping subset you might well draw the opposite conclusion and then start asserting that I am spreading misinformation. Also, it is quite possible to draw a different conclusion from the same fact when one has different basic views. In practice this is not possible in any practical way.

It seem to me the main problem are that there are things like troll factories and also that everybody is just getting information from their own bubble. The latter could maybe be addressed in a small way if we forbid these big companies to spy on people so much. For the first problem I just do not see a solution. Maybe the only thing that can be done is waiting until peoples BS-detectors have calibrated themselves somewhat to the new online world that we are living in. Which may or may not happen.....