"It's easy to criticize something that you don't fully understand".
That's a fact just like Warren Buffett and other economists and financial experts who are FUDDING about bitcoin. I thought before that BG is telling us that bitcoin is something that is going to grow in the future but it seems that he changed and now going into sideways with bitcoin.
Everyone has their own right to give their opinion.
But sometimes that freedom is becoming the tool of those that wants to take the advantage of getting into something.