Professions disappear, it's a natural side effect of progress. Stablehands aren't really that common anymore, because most people drive cars instead of horses.

I really hope we can deprecate a whole bunch of professions related to fossil fuels, including coal miners and oil drillers etc.

I sympathise with the people working in those professions, I do, but times change and professions come and go, and I don't buy the argument that we should stop inventing new stuff because it might outcompete people.

As for positive uses of this technology, it might be used to immortalise a voice actor. For example Sir David Attenborough probably won't be around forever, but thanks to this technology, his iconic voice might be!