It never hurts to log off and touch grass. Photo: Getty Images The vibes on Twitter are off. They have been for a while, but now the bird app has turned into the meme of a girl watching a house burn down, thanks to Elon Musk’s continued efforts to command the platform — which have so far included charging users $8 to (in his own words) “trash” him, laying off about half of the company’s 7,500 employees, recommending that people vote Republican, and suspending Kathy Griffin for “impersonating” him. And now, the world’s biggest social-media activists — celebrities, of course...