Yes. Multiple times. I always found it pretty funny as I'd known they were developing their own right alongside it. Granted, I think his criticisms are more s

Yes. Multiple times. I always found it pretty funny as I'd known they were developing their own right alongside it. Granted, I think his criticisms are more specific than being about the technology in general. I think he was more critical of it being penned as some replacement for existing currencies and monetary systems, and the whole use as an investment. But don't quote me there.