The reason is that people who want to succeed in investing are looking for someone who has already succeeded, in order to repeat his success, they are looking for the best in investing. Since Buffett is the best in investing, so many learn from him investing. Perhaps Buffett could succeed in investing in cryptocurrency if he knew this, but we dont know because he doesnt understand it.
well, that's true, but you need to remember that for someone who's buying someone else must be selling. so every time buffet sold on the top, someone else lost money to him. So, not possible everybody buys at the same time and sells at the same time. For every successful investor, there's someone losing money as well.
Plus, buffet is not master investor in investing. he was actually wrong about tech stocks. he was wrong about amazon and even tesla. yes, he's good with traditional investment assets but he isn't that good in technology-related investments