What you can't do is USE that voice in a way that seeks to mislead (by however much) people into believing it is someone else.
I'm really not sure why people can't understand that it is intent that matters.
And people have been making computers sound like humans without anyone suggesting that it's some attempt at fraud for very long.
> Why reference the film Her?
Because they developed an AI some people is bonding with. Which is the bigger deal? The voice or the AI, you tell me.
Then don't worry about it. It doesn't matter anyway. Ponder the questions in the comment you replied to in stead; the ones you evaded by asking these irrelevant ones.