Reading the linked article I'm very surprised that the author says they can't talk about what they read after reading it. I'm quite the opposite as I often talk

Reading the linked article I'm very surprised that the author says they can't talk about what they read after reading it. I'm quite the opposite as I often talk about what I've read to my friends, even before finishing the book. Sure I might not remember things as well a year later, but then I can go back to the ToC or index and find the bit I've forgotten. Saying that books don't work in general doesn't ring true to me.