I thought it had a lot of interesting things to say about the nature of beauty. Yes, the fashion industry is exploitative of women and that's not an exceptionally bold thing to say, but I think the movie did a great job of stripping away the pretense of cold professionalism in the fashion industry and connecting the underlying motives with animal savagery. To me, at least, the movie was saying that so many of our natural, human desires (having sex and personal advancement especially) are built on brutal competition and are a thinly veiled struggle to kill or be killed. As a theme, I found this both interesting and genuinely scary, even more so because this movie is fucking terrifying.
The only scene that didn't quite ring true for me and verged on shock-for-shock's-sake or art film pretension was the corpse-fucking scene, but it was such a brief moment in an otherwise really well-constructed and smart film that I don't detract too many points for that.