As I look at peehole sounding videos, I realize that there seems to be a hugely disproportionate number of itty bitty cocks getting rods shoved down them.

Is this an overcompensation method? Is it like driving a big car, but they couldn't afford a car so they bought a rod to shove down their cock?

Just look at that poor teeny cock. The sounding rod would probably be more fun to fuck.