Even with the efforts done by the inventor Satoshi Nakamoto and the people who supported bitcoin around the world, still these guy from EY says there was no practical use for it and the deflationary model can only give damage to the global economy. On my thinking this isn't the case if this guy could only see how good the invention was. For me he was just talking non sense. Something that should not be entertained. Imagine how many lives have been saved by bitcoin in my locality. One was able to pay hospitalization, the other have been able to buy for him a house and lot, others have been able to buy a car to get to his job early, and so many other things.. See how people even made bitcoin atms and for just a simple reasoning bitcoin becomes useless and damaging? I think this guy has to wake up...
Practical use is increasing. Obviously speculation is still bitcoin's main use at the moment, but we're seeing real life usage cases.
You might not be able to appreciate what BTC brings, because you may be in a currently financially stable nation. But once this facade of stability is swept away, you will see why a decentralised system may need to serve as an alternative for at least a period of time. Just look at what happened with the Venezuelan situation.
I can at least somewhat get what they are coming from with "no practical use", but damaging to the economy is just stretching it. To me, bitcoin is no more damaging to a domestic economy than any other forex, or commodity. It is completely independent of the fiat system, and unlike some others, I certainly don't think that bitcoin is necessarily going to pose a threat to banking, although there may be adaptations in the banking industry to BTC and blockchain.