I do not think that a person really thinks on this topic, I think that he is worried about some other project, because today almost 100% of people in the crypto-currency world think that the Ethereum project has all the chances to displace our beloved bitcoin.
That is right, ethereum is connected in bitcoin and so far right now Ethereum is still in the number two cryptocurrency of all time so we don't need to worry about this, if we want this let us try it don't ever take for granted for sure time will come that Ethereum will have a great value.