I totally understand the argument about the show moving slow with little plot and character development. I honestly thought it would have picked up by now. And since the last episode wasn't in the book, I didn't see a TON of value in it. But having read the book, there's a lot of subtle imagery throughout the show that pulls from Camille's past, and I find a lot more enjoyment in those moments (as well as all the weird glances for an entire episode) because I know what they're getting at. I think it's incredibly well done in that sense. Throughout the book Camille comments on what word on her body is "burning" at a particular moment in the plot, so it's really cool to see how they tied words into various shots. Maybe I'm easily entertained, but I think knowing a lot of the backstory is helping me appreciate everything that they're doing with the show.
I think y'all are also expecting this to be a huge murder mystery/detective show, which it really isn't. Yeah they're trying to figure out who murdered the two girls, but I saw it as more of a story about Camille and her life in this small town and her perspective on it now that she's left (and how it's affected her) and the murders are just what gets her back to the town.
/rant over and fwiw I don't fall into this demographic by a few years if we're considering this relevant information