The Washington Post is one of the leading journalism sources in the investigations of Trump connections to Russia, Facebook just puts everyone into an echo chamber. Facebook does not meet the minimal standard of being a threat to Trump in some way that I implied but did not spell out. There is minimal chance of Facebook cracking down on fake news - historically Facebook showed how much of spine they had when they crumbled at the first sign of criticism from conservatives about Facebook's program to use real people to curate stories and the employees were spiking stories aimed at conservatives that were fake.