Regarding that, I read this:
Mr. Buffett declined to comment on the Stone deal. Its entirely Todds, said Debbie Bosanek, Mr. Buffetts assistant, in an email. He never comments on anything that Todd or Ted do. They have total autonomy.
Maybe he himself isn't as open. Either way, just because they started investing at fintech doesn't mean they'll jump right into crypto. Fintech is already risky by their standards, it would seem, so I would expect them to only take one step at a time.
Either way, crypto doesn't need Warren Buffett's approval.
Warren Buffet is not even an "opponent" of bitcoin. Warren Buffet, Charlie Munger, Nouriel Roubini, and similar people are merely just background noise for bitcoin and cryptocurrencies in general.
Would that change their mind on their opinions regarding bitcoin and cryptocurrencies in general? It's highly unlikely in my opinion. I don't think investors like Warren Buffet likes "investing" in stuff that are high-risk, as I'm pretty sure he has a hard time on trying to understand bitcoin and cryptocurrencies in the first place.
The people whose says the bitcoin will never end up well, what more do you expect from him? This is all fake news. You should just forget about him because he's too old to understand the benefits of cryptocurrency, we don't need him on board, period.