I think...
Sofia Coppola's work is always going to greatly divide opinion.
Those who dislike her work, are those to whom technical aspects of film-making are the most important. They cannot concentrate if they spot mistakes, poor cinematography, plot holes (or in Sofia's case, as is often suggested, lack of plot), historical inaccuracies and so on.
These kind of people, whilst I wholly admire their knowledge, attention to detail and scientific approach, I cannot fully identify with.
I belong to the group that adores her work; those for whom film (well, all forms of art, to be precise) serves the purpose of provoking an emotional reaction. To become embroiled in the heartbreaking world of a bittersweet story, and marvel at beautiful little touches that make everything much more vivid.
For the second group, it is not black and white. In my opinion, an outstanding filmmaker of widely-acknowledged standards can make movies that I personally consider terrible, however outstanding they are considered. Unfortunately for Sofia, however, there are many people whom feel the complete opposite, and that's what makes her as equally loved and hated, in my own opinion.
At the end of the day; opinion on movies, and any other form of entertainment or art, is entirely subjective relating to your own personal code. Don't you think?