Amazon's IPO initial public offering took place on May 1997 at a price of $18 per share, rising to more than $100 and subsequently dropping to less than $10 after the bubble burst. Your right blockchain is a technological leap forward and buffet is no tech expert hes never claimed to be but blockchain is not a magical source of wealth creation either And when hes says it will come to a bad ending he means people will lose a hell of a lot of money. That does not mean blockchain will fail it just means it has been misunderstood and abused by the market.

Anythink can be turned into a bubble when it is miss used Crypto does not escape this