People follow him because he is the biggest man in cryptocurrency What he says happens. Is one of the people and when he speaks it is clear and easy.
He is a successful man in cryptocurrency The coin he talks about gets his price up. a few days ago he tweeted about dogecoin and check his price where are you. I think that's why people follow Elon Musk.
No he is not the biggest man in the cryptocurrency, the reason why people are following Elon Musk is because he is famous and he is the founder of the spaceX and simply because he is one of the most intelligent man in the world, he is the only one saying that Mars will be eventually inhabitable by man. People called him "Alien" because of the mind that he has, aside from this Elon Musk was one of the biggest reason why doge and bitcoin is pumping up. Imagine he buys 1.5b of bitcoin that's why many people are following him right now.
Also, he's the richest man in the world atm.
Who wouldn't follow if you do have that kind of title? Everyone will know on what youre capable of and what are your achievements.