I agree on the assessment of the article, however not with the conclusion that blockchain is driving this market alone - its certainly there, but I don't know any ML practitioner who answers 'how many gpu's' with anything other than 'how many can I have/afford ?' We're starting to get more and more projects reporting their processing time in GPU/years - the singularity is bull, but ML ain't going away:-) That said, if people start dumping their mining rigs, I'm on ebay looking for them :-D