Namely because of how perfectly Helen Mirren shut down her interviewer's sexist bullshit. Like when he suggested that she couldn't be a "serious actress" because of her physical appearance.
Not to mention the fact that he referred to her physical attributes as "equipment".
Of course, she immediately put him on the spot and asked him to explain what he meant.
If that wasn't bad enough, he then proceeded to just stare at her chest in explanation.