I can't see how society can possibly function post-automation without UBI. All our basic needs will be met by machines, yet thousands will starve because they don't have a job so they can sit on a desk all day and do nothing?
I think this is Yang's biggest fallacy. He assumes that growth and innovation will be "eternal exponential". That's a pretty huge assumption. Yes, it's been relatively true for 100 years, but that's a very small slice of human history. What if growth isn't exponential? What if the singularity is 1000 years away?
Moore's "Law" and exponential growth are taken as gospel, but there's no reason why it will continue this way forever. Too many people are thinking about the singularity and too few are thinking about an impending innovation stagnation.