His writing is known for a very smooth cadence. You reach these “lumps” in the narrative, and can almost miss them, which, for me, multiplies their impact.
I’ve always considered him one of the best writers that I’ve read. He probably gets less credit than he deserves (although I think he’s won a Pulitzer), because of his subject matter; sort of like Leslie Nielsen, or Victor Borge, who were both masters of their art.