I know the article is a threadbare simile, but it more than misses the whole point of Galadriel's character in the books/movie. For even someone like Galadriel who meets this beyond-human ideal of beauty, purity and "goodness", the power of the One Ring to dominate life is so corrupting that it would simply turn her into a new Sauron. Which is why after failing to resist temptation, Galadriel leaves Middle Earth and goes into the West. If there's one point that is hammered in repeatedly throughout the Lord of the Rings, it's that such absolute power cannot be used for good, despite anyone's best intentions, and the only recourse is for it to be destroyed.