I think the point of the article was missed, which is conductors with liquid electron flow. Currently it's possible under extreme circumstances, but as OP said it's the birth of a new era, and not yet practical implementation.
When this technology becomes mainstream, it will revolutionize audio, and life in general.
Jack Bybee started out on this path, and I was fortunate to pick his brains while he was alive... we are one foot into this quantum era already. Public feels little yet, but medical field, aerospace industry and mil applications are already knee deep in it. Sorry, I cannot share more on this without breaking confidentiality.