I've heard a few different comparisons between her and the AI in question and, personally, the AI sounds almost exactly like Siri and not really like Johansson other than being a female voice.
Which doesn't really change the case against the company, just who the victim is. Because Siri is also based on a real actress. Who didn't even agree to the most of the shit her voice was used for with Siri, either. This new AI voice seems, to me, to be built off Siri's voice so they're essentially still using a real person's likeness without permission.