"Binti," "Murderbot," and the Rise of the Sci-Fi Novella

This is small of me, but I can't help myself. Someone says they're obsessed with the TV version of Game of Thrones--or The Expanse, Altered Carbon, The Shannara Chronicles, The 100, The Magicians, whatever. I tilt my head forward, peer over my non-existent glasses, and inquire, with what I like to imagine is a sparkle of menace: Yes, but have you read the books? The hiccup of guilt is so pure. Of course they have not.