I am not particularly surprised that Warren Buffet does not believe in the blockchain tech and cryptocurrency. As far as he's concerned the entire technology, of which bitcoin is a product, is doomed to crash sooner than later. He has made this opinion clear on different occasions in the past.
Come to think of it, what do you expect from a man who made his wealth dealing in fiat money and also heavily in very physical, energy-sapping , manual activities. He cannot fathom the fact that money is ceasing to be physical and the process for making or creating wealth is fast becoming virtual. For centuries before he was born the manual system has existed and he is one of the people who have used it to their positive advantage. It is therefore understandable that he cannot fathom the miracle behind the how, why, and wherefores of the blockchain tech.
My advise to younger, especially yet-to-be rich people, is that they should for once not pay attention to the likes of Warren Buffet because he belongs to the dying generation. Blockchain tech is the future of the world.
RE: CRYPTO NEWS: Billionaire makes grim Bitcoin prediction and South Korea DOESN'T ban crypto trading