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He is not the voice of doom. He is saying that blockchain is here to stay. It is truly revolutionary. But Bitcoin is outdated. It isn't moving with the times. Inside the Bitcoin camp, there are opposing camps, pulling and pushing in different directions. They do not have a unified front. They freely acknowledge internal dissent about the best way forward. Meanwhile, other altcoins are looking at Bitcoin and making improvements. New adopters might buy BTC first, to trade for altcoins. Some altcoins have amazing features which make promises for the future and have development plans that promote the altcoin's future continued utility, as well as enabling a ROI through PoS; DPoS etc.