Everything about Dita (house, clothes, persona) is deliberately styled like a cartoon, so it's only natural that it seems one-dimensional after a while. It's overexposure, that's all. You stop appreciating what a counterpoint she is to other celebrities' styles.
Her image at the moment is 'fashion clothes horse crossed with fetish object' so quotes like that, it's all part of the image-making, the pretence, to make out that she's something more sinister than the average model.
I agree with you though I do wonder if she has the 'aesthetic' intelligence to move on and adapt another revivalist style a la Madonna who has made a career out of it... I will give Dita a year (I know, I am too generous).