Check out Bill Miller's investor letter where he discusses the "certainty" of storied investors that Bitcoin will fail. Miller is the most successful mutual fund manager in history.

https://millervalue.com/certitude-not-test-certainty/

Also a good read is Miller's letter on Bitcoin from 2015. He put 1% of his fund into Bitcoin (now 50% of his fund due to the meteoric rise in price): https://millervalue.com/a-value-investors-case-for-bitcoin/