A bit of a stretch to say Charlie didn't practice what he preached just because he [an extremely well known value investor] did not invest in cryptocurrencies [a market driven by hype and speculation and with unclear underlying intrinsic value].

It still seems too early to declare Bitcoin a success. It’s still primarily a tool for speculation. Buffett and Munger aren’t/weren’t fans of non-productive assets that fell into the realm of the greater fool theory.

What evidence?

Yes, how sad… such a tragic ending.

Bitcoin is on its way to $0, probably within 40 years.

Some studies say that average life of companies on the S&P 500 is less than 20 years. So if Bitcoin does double that it is quite successful. https://www.imd.org/research-knowledge/disruption/articles/w....

Successful by what metric?

Companies on the S&P 500 don’t exist exclusively as investment vehicles. They make things. They often go bankrupt trying to make things.

If your metric for success is a market’s lifetime, feel free to invest in gold or silver.