Very true, and along the lines of what I was thinking.

But it wouldn't surprise me if there were a way to establish a voice print. In fact, isn't that already a thing? Even if it is a little rough around the edges, it wouldn't surprise me if we were even closer to a higher reliability than thought.

With or without that, consider the copyright infringement suits for someone wanting to protect their song, melody, or whatever. Someone could poke at the 8 keys of a toy piano, and if a music artist's legal team felt it sounded close enough to the original? The ol' beatdown-by-seeking-damages trick if not a cease and desist order.

Anyway. If someone has enough money and too much time, they'll make a case out of anything.