Musk's posts have changed the market value of a lot of projects. When he tweets on his tweeter account that Tesla would hold Bitcoin reserves, the price of Bitcoin went up. When he wrote something that made people worry about Bitcoin's future and how much energy it used, its value dropped. He has a lot of followers, no matter what you think of them.  Musk thinks a lot about cryptocurrencies and has even put a lot of money into stocks that hold Bitcoin. He bought Twitter not long ago and changed its name to X.