He smoked it on a live video stream. That would indicate impaired judgement to me.
One of the most brilliant men on the planet briefly puffed on a tobacco/marijuana spliff at the end of a long and very insightful interview.
He went on to discuss the negative effects of marijuana use on productivity...
The media focus on this relatively minor event is overblown...but that’s the click-bait world we live in these days, isn’t it?
Perhaps because he generally thinks that he can do whatever the hell he wants.