Bitcoin isn't a currency by most textbook definitions. As Bitcoin is now, it will never replace fiat currencies because it is not a stable store of value (among other reasons). For now, Bitcoin is just another way to send fiat and something of an investment.
So Bitcoin fanatics who believe Bitcoin will replace fiat are wrong - unless they're willing to accept major changes to the system that go against their usual beliefs. (And even then, I doubt many governments would sit idly by, for good reason.) But for practical people who don't want to deal with buyer fraud, exorbitant fees, and lack-of-privacy, Bitcoin is great.
Buffett may be a killjoy and trying to preserve the current system which tends to benefit the wealthy and well-connected. I'd guess he probably has a lot of stake in that. But he is correct for now.
So Bitcoin fanatics who believe Bitcoin will replace fiat are wrong - unless they're willing to accept major changes to the system that go against their usual beliefs. (And even then, I doubt many governments would sit idly by, for good reason.) But for practical people who don't want to deal with buyer fraud, exorbitant fees, and lack-of-privacy, Bitcoin is great.
Buffett may be a killjoy and trying to preserve the current system which tends to benefit the wealthy and well-connected. I'd guess he probably has a lot of stake in that. But he is correct for now.