This is an old statement and this guy is just one of the many that support that statement.The only difference is,that he is an ex-Goldman Sachs employee,which makes us think that he is a servant of the banking status quo and a fiat money suppporter.BTC is just a tool,it can go in the rights hands or in the wrong hands.The forces that stay behind bitcoin might pop the global financial bubble,but they might replace it with another "btc" bubble,which might be destroyed by some improved altcoin.We can`t know for sure.