Why are US Americans so obsessed about leaving the bar up

Genuine question as an European ski instructor.

When I scroll through instagram and there’s a reel about leaving the bar up/ putting it down, there’s always a HUGE culture war between Us Americans and the rest.

Obviously instagram reels isn’t the reality but seriously why are so many people obsessed with leaving the bar up? Like there’s no objective disadvantage to put it down except for snowboarders??

Would love to hear your input:)