This book is like the Liam Hemsworth to Red Rising's Chris Hemsworth. Meaning that I can certainly see why other people might be into it, but it personally does very little for me and I honestly can't really see the appeal when the superior version very already exists. You have a society built on the hard work on the Reds, you have some metallic color (Silver here, Gold in Red Rising) who rules everything with a tyrannical fist, you have some chosen one who infiltrates the class in power and realizes that they're not all that bad while also simultaneously coming to understand that revolutions are hard, guys. 
 But whereas Red Rising tackled this same storyline and these same issues with excitement, intelligence and complexity, this book is exactly the way I find Liam Hemsworth: wooden, predictable, and entirely without any sort of charisma. Bypass this lesser Hemsworth of a novel and just pick up Red Rising for your "low born everyman works to overthrow the upper class" narrative. 
 PS. That betrayal was so predictable. I do like how she chose "no one" at the end of the story, but I assume this was done so that we can have the Kilorn/Cal/Mare love triangle in the second book.