You think Genco was born old?

I think Puzo was just trying to relay the face that Tom wasn't a Sicilian (for about the one millionth time) and that Genco's illness kind of put Tom in the position a liitle too quickly (even if he was a Sicilian). I'm not sure age had anything to do with it. Ater all, during the formulative years, they were all young (Tessio, Clemenza, Vito, Genco).