When I was a kid, I remember sitting beside my dad as he tied his shoes one morning and noticing that he had patches of skin on both shins that were completely smooth – not a single hair was in sight. When I asked him about it, he laughed and said, “Oh yeah, that’s just from my combat boots. They wore all the hair off.”
That seems like a user error to me (sorry, Dad), but after double-digit years of service and laces that were maybe a bit too tight, I could see the connection. If you know anyone in the armed forces, past or present, you know all about combat boots, regardless of how they affect leg hair.