I just chalk it up to trendiness, an endless obsession to find acceptance and herd mentality, I never really understood these kids and their fashions. Then again, I am a bit of a loner so I'm usually on a slightly different wavelength than most other people.
crew cut socks are the one type of socks that aren't a fad. They've been around as long as the term socks has. Ankle and knee socks are newer than crew cut. Men wearing ankle socks is actually something that has only in recent decades been a norm.
I started wearing Nike dri fit crew cut socks for dance because they don't slide off. whatever material they use makes them the perfect texture for turning and jumping. They're pretty durable. I started wearing them everyday in colder weather because when I take off my boots they don't come off. They keep my feet reasonably warm but aren't suffocating.