I love how they have to go out of their way to explain that, rather than train a model on Scarlett Johansson's voice, they came about her voice honestly, by just finding someone who's natural voice sounded the most like Scarlett Johansson... as, clearly, no one is questioning that this voice was chosen to mimic Scarlett Johansson.
(Note that if you select that voice today, you might not actually be using it anymore. I noticed earlier today I was shunted off to Juniper, which I didn't like as much.)