There are actually people (e.g. https://www.twitch.tv/andrewmccalip) who are currently trying to replicate this. But from what early (internet) experts said, even if it works, is replicable and legit, it wouldn’t allow much current through it, about a quarter of amp. Still promising, but not as groundbreaking as initially put.
End users (so to speak) usally don’t buy full parmesan wheels, anyway ;)