Easily true if you include all the content he is constantly producing for X

And look what it's done to him. He's a substance addict who can barely form coherent sentences when he speaks. People aren't designed to work like that.

Musk thinks he works 80 hr weeks.

He counts getting high and browsing the internet as work.

Being the best Diablo player in the world is hard work.

He also believes that he's a "world class Diablo player", which is of course bullshit.

I mean, this is a bit like Thatcher pretending to only sleep four hours a day; it sounds deeply impressive to stupid people, but would in fact be enormously detrimental to their ability to function properly. I would assume he’s just lying about this, or else including his tweeting habit in ‘work’.