They could have used any accent, any tone, anyone. Literally anyone else. And it would have been fine. But they obviously copied the movie even if they used a different actress.
https://www.reddit.com/r/ChatGPT/comments/1cwy6wz/vocal_comp...
And here is voice of another actress ( Rashida Jones ):
https://www.youtube.com/watch?v=385414AVZcA
which actress do you think is similar to the openAI sky voice?
Again, given the vast range of voices (even female voices) available, choosing one that sounds so close to Her, given the subject matter of the film (and the OpenAI leadership's references to the film), this is not coincidence.