The number one rule in the crypto community is don't ever believe or trust someones words towards on how crypto would be either regarding on prices or future predictions. That BUffet man is just saying his own opinion not totally a reliable thing to consider for you to believe that guy usually make some funds but the truth is he does make engagement with bitcoin which is a total dumbass.  Bitcoin will still have a strong value, see the existing community in it very much and its value is also high.