Fake news, online hate, disrespect, etc are part of an extremely innovative and subversive reactionary movement (for better or worse).
This movement is a reaction to the failing economies of the late 20th century (generously padded over by ever-so cherry picked statistics), the fact that secularism never really came up with any kind of raison d’etre, and the hijacking of legitimate means of truth seeking (government departments, universities, think tanks etc) by powers with ulterior motives.
Saying “the earth is flat” is the best example of this. It’’s such an amusingly false claim, to continue to believe it and declare you believe it is a kind of emancipation from / attack on the systems of power. There is nothing they can do.
Also the best example of the last point regarding “hijacking of legitimate means of truth seeking” is replacement of public intellectuals like James Kenneth Galbraith, who lead all rationing for the US during WWII, with the likes of those desperate for more PR, sales, and conference speeches such as serial-plagiarizer Fareed Zakaria.