Quite happy to be told I'm uber grumpy but I honestly do not understand why this is news.
He said afterwards that it was a joke, but the opening post even reads like a joke.
Everyone should know by now, not least of which media organisations, that Elon talks a load of crap constantly, so I don't know why this ends up being news. Even the BBC have it as one of their front page stories.
He is extremely online so anything he says should pretty much be treated as white noise, for the most part (although I'm sure Twitter are enjoying him undermining his own case for them)