I am not optimistic about bitcoin, said Bill Gates. The Microsoft co-founder, critic of the fluctuations, ecological impact and anonymity of bitcoin, advocates for local and transparent digital currencies. Why Bill Gates Is Worried About Bitcoin Bill Gates is not very optimistic for bitcoin. In an interview with Bloomberg on Tuesday, February 23, 2021, the Microsoft co-founder - long the richest person in the world - expressed reservations about three key aspects of the famous cryptocurrency: its fluctuations, its environmental impact and its anonymity. Elon Musk, CEO of Tesla and central player in the current fluctuations of bitcoin, “has a lot of money and is very sophisticated. So I don't worry about his bitcoin increasing or decreasing randomly,” said Bill Gates. “But I think people get sucked into these fads, and maybe they don't have as much money that they can go without. Also, I'm not bullish on bitcoin, and my general opinion is that, if you're less wealthy t...