Nothing to do with his appearance, but with his surroundings and things like his video quality. It's also just one observation of a number of very odd things — the oddest thing being that a multibillionaire has reappeared after 3 months of disappearance without making a mention of it! Especially after such widespread speculation, if there were nothing going on, you'd think he'd care to comment "hi everyone, I've just been on vacation," or something innocuous like that.