It’s one thing when that voice comes out of a person naturally when that’s the only voice you’ve ever heard come from a woman.
However, the thing that everybody is talking about the most is the way she sounds.
In the case of Natalie Portman, we know she’s performing, which runs the risk of making the voice sound like parody, which is apparently what everybody thought on set, at least at first.
Jacqueline Kennedy had a unique way of speaking, to say the least.