How can you be sure if bitcoin will never exists anymore in the next 10 years? Remember that bitcoin has already spread throughout the world like a virus, bringing good news and uplifting the economic growth of those countries who had embraced the said technology.
I think it is just their speculation, he is free to argue like that but what he said was different from reality. you're right bitcoin is increasingly spreading and getting popular and that is the key to the development and life of bitcoin, from that we believe that bitcoin will continue to survive