I agree this is an amazing demonstration of what AI can do, but I think that the current method of "learn and repeat" that depends on having tons of computing resources available is still too inefficient in many ways. Personally I'm more interested in what parameterisable formant-based synths can do, since they are extremely efficient and can produce a theoretically infinite variation of voices, although the output quality is still not great. Example: https://news.ycombinator.com/item?id=31604299