Known for his previous comments criticizing the crypto industry, economist Nouriel Roubini recently posted fresh negativity against the digital asset sector.
"DeFi was vaporware from its onset," he said in a Sept. 24 tweet. "Now totally faltering as blockchain was always the most over-hyped technology in human history." A slang term, Vaporware essentially refers to a highly touted product, service, etc. that holds no actual value or technology behind it.