Hard to rate this one - the story itself is deeply distressing, all the more so because the author barely seems to realize the degree of awful occurring. But it's a memoir, not fiction, and I can hardly criticize it for not being narratively satisfying. 

I can feel some sympathy for Elvis as one of the first victims of the way we've normalized treating celebrities, but overall he was a manipulative, immature, self-centered person who just happened to have enough charisma to convince those around him that it should be accepted.