Only the future can tell us who is right. I just know that the system is against cryptocurrency. This famous person is maybe expecting bitcoin to be near zero so he could buy some. Everything is possible. Remember that negative advertisement is still advertisement. The more popular bitcoin will be, the harder it will be to destroy it totally. He said it is not profitable? What about the blockchain system? I know that the volatility of cryptocurrency is dire. However, we must know that at the beginning, the bitcoin was very cheap. I believe in a future without fiat money.