The core assumption of techno-optimism seems to be that technology has led to a vast improvement in living standards, so we should do that more. This article is a hit piece which spends a fair amount of time trying to characterize techno-optimists as frantic, manic, wild-eyed, pseudo-religious nuts, but the core assumption of techno-optimism is not unreasonable.
I disagree with the tone of the article, while agreeing with many of the arguments.