I don't think this is that simple. She's accepted that she has no privacy in her day to day life and that she will never again be able to run into a store or walk on the street without photographers chronicling it. What I think is so wrong about this is the idea that she also deserves no expectation of privacy in her very private life. It's been repeated ad nauseam, but this was a private house, surrounded by private land and she was alone with her husband, and the photographer was half a mile away. The idea that she should chalk up this invasion to a routine thing she just has to expect is incredibly unfair.
Yes, she's a public figure. No, that doesn't mean she should have to give up every moment of her life to worrying that someone is going to spy on her and share it with the world: