Are there any "prodigies" in philosophy?
Music and chess (the examples the author gives) along with math, are special cases where there is obviously some shortcut most of us don't possess that makes some people naturally really good. And critically, they're all completely objective.
Pretty much everything else, especially philosophy is wildly subjective anyway, so it's not like a kid could just step up and drop a philosophy bomb the way a piano prodigy could demonstrate their skill. And it's got all sorts of complex dependencies, like reading a lot of stuff. There are also no biblical scholar prodigies.