This one case is a pretty grey area. But what is not is the voice cloning tools like Eleven Labs which can and do clone voices very well.
Forget about stealing one person's voice. Or a lot of people's voices. This technology will soon be able to replace everyone's skillset. Give it 2-5 years.
This type of reaction is how we know that humans will not maintain control of the planet for much longer.
But who will? There will always be some people who own the technology, they will hold control over people with the help of technology but not the technology itself which has no intent whatsoever. But I agree that people will be rendered powerless or even redundant which calls their existence into question.