If I didn't think some are actually serious about nitpicking everything that comes out of Elon Musk's mouth (or keyboard), I'd actually think it was meant as a joke. The reality is people just aren't happy unless they're beating down on someone else. If Elon Musk says nothing then there's the crowd that complains because he said nothing. If he makes a canned PR statement then there's the crowd that complains it's a canned PR statement and just meant for PR sake. And if, heaven forbid, he just says whatever is on his mind in a straight forward, honest, and often times, really humerous manner then there's the crowd that complains because he was straight forward, honest and funny.
I actually expected Elon Musk to tweet something. It's entirely in his nature to strike back when someone takes an UNWARRANTED shot at his company/product. Mr. Clooney could have gotten away with saying something negative about his Roadster/experience with his Roadster had he not made an unfair comment. "Yes, I owned a Roadster. I was one of the first cats to get one. It had a few issues and I found myself stranded on the side of the road a time or two, but darn it all, that car could smoke. It certainly wasn't a golf cart."