Peter Thiel, the co-founder of PayPal, has accused a “finance gerontocracy” including Warren Buffett and Jamie Dimon of hindering bitcoin’s progress.

The outspoken libertarian tech investor described multibillionaire Buffett, the world’s richest investor, as the “sociopathic grandpa from Omaha” in a keynote address at the Bitcoin 2022 conference in Miami on Thursday. Thiel’s address began with an analysis of the investment merits of cryptocurrencies but soon escalated into a tirade against the financial establishment, including “bankrupt” central banks and the “hate factory” of ESG — which stands for environmental, social and corporate governance and is a cornerstone of responsible investing principles.

“It’s a movement, and it’s a political question, whether this movement is going to succeed, or whether the enemies of a movement are going to succeed in stopping us,” he said, shortly before naming Buffett as “enemy number one.” In a speech that also cited JP Morgan’s chief executive Dimon and Larry Fink, the chair of investment group BlackRock, he said institutions run by a “finance gerontocracy” were hindering the cryptocurrency. Thiel said choosing not to invest in bitcoin was a “deeply political choice” and the financial establishment should be told “you have to get onboard on this.” Thiel added that the $830bn bitcoin market could rival the global equities market, worth more than $100tn.