Actually, that would be Tyler Rico from Tucson, Arizona who went Distinguished at not quite 13 1/2.
Tyler is the youngest (so far) but he's far from the only Junior to leg out before or since. Check the stage at Camp Perry each year; lots of young eyes and limber bodies standing up there.
It's not just the "younger guys" who are slaves to optics either. Go to any range on any given day and about all you'll see are guys with clones of the Hubble on their rifles banging away at 100yd. Ask them why and you get some BS about being too old to shoot irons.
Tell people, including most shooters, that you shoot 600 or 1000yd with iron sights, that you know guys in their 70s and 80s who do the same, and they look at you like you've got two heads.
Maury