Was born with super small feet in the 1st percentile as well as hands due to a benign genetic issue. Totally healthy but shoe shopping is always awkward. Have decent balance and can walk and run fine as my calf muscles are quite developed to compensate. No, the myth isn’t true.
I’m 6 foot, small hands, average feet, slightly above average penis (not a personal observation).
I know they say the sizes are related, but I really don’t think they are.