Altman should have said, "Yes, we made the voice similar to this washed-up actress, but her voice is not much different from anyone else with similar regional upbringing, year of birth, habits, and ethnic background, so we invite anyone else born in the mid-eighties, raised in Greenwich, and with Danish heritage, to sue us too. We'll see how well you do in court. Otherwise, get fucked."
This whole thing with anybody giving a shit about your voice, which isn't even yours, as it's a product of your environment and genes, and will be strikingly similar to anyone with similarities thereof, is insane.
Altman shouldn't have used weasel words, I agree. He should have owned it, because it's a total non-issue, and the people upset about it need to be shamed as the Luddite assholes that they are.
Swedish, I would have guessed? Danes much more frequently use "Johanssen" with an 'e', AFAIK.