So the solution
To Fake News, and people self selecting online into extremist echo chambers (due to a combination of semi-anonymity and a wide audience allowing "like minded" people to reinforce each others minority beliefs), would be for Facebook to buy Twitter and then shut themselves down?
Because they are part of the problem, and no where near the solution.
It's like he's invented a bio-weapon and is now trying to figure out how it can "do good".