Georgia | Shaun | Buffy
Ciel and Leisha are, but they've also outright said they don't care, and asexuals tend to just find it boring, but not outrageous.
Pollux is barely over 18 and has kids. So he obviously wasn't. Clove and Katniss were trained to murder other kids for entertainment, pretty sure they aren't shocked.
It's the replacement goldfish thing. There was some kid they probably miss or fucked up with, and they're projecting it onto all these other people. Just like how our parents projected all their shit onto me and Shaun, and how Peter acted concerned about us because Rebecca was dead. None of those things had shit to do with us, and this has shit to do with the kids' feelings and everything to do with Dresden and Karrin's.