The real horror of addiction, self image, self harm etc. It is visually stunning and so is the sound. Reminiscent of 'Death Becomes Her' & 'Requiem for a Dream' but more sci-fi, violent, and viscerally disturbing. Maybe Demi's best film. It is all art and metaphors with not-so-hidden messages throughout. Won't be for everyone.
Horror. Gore. Triggering. I think it can be a good teaching lesson for self reflection to integrate our shadow selves.