Elon Musk could become the world’s greatest hero by buying Twitter and then immediately shutting it down. 

Seriously, it would be a revelatory moment. Ninety percent of the people who shitpost on Twitter would just start shitposting on Facebook and after a few days wouldn’t remember that Twitter had ever existed. But ten percent would have a fighting chance of finding something better to do with their time. 

UPDATE: Now that the deal is done — probably? — I think one of the biggest immediate consequences is a dramatic upturn in the use of text-replacement apps by journalists. Can you imagine writing this piece if you had to type all the scare quotes around “free speech” with your own fingers? Hello RSI therapy.