Elon Musk is involved with several different technology revolutions. People who have trouble adapting dislike him because they blame him for changing the world faster than they can cope. Then there are all the insecure people in tech fields who are just straight-up jealous that Elon Musk gets so much attention. They tell themselves that what they really don't like is "all the hype"--but the truth is that they feel insecure and self-conscious about their own level of success when they compare themselves to Musk. The only way to cope is to try to invalidate Musk's success by saying that "it's just hype", "he's just a snake oil salesman", "he's taking credit for other peoples' work", etc, etc.
So there are large populations that just want Elon Musk to be a failure--and that dynamic leads to the clickbait mills generating content to feed that crowd. It's not that unusual. Pretty much the same people disliked Steve Jobs for the similar reasons--and pretty much every truly successful person has to deal with haters. It's a bit worse in the tech field in part because there are a lot of truly insecure people who follow tech closely.