The danger is that so many of us seldom ever see these kinds of temps and don't really know how to handle them. That leads to stupid things like walking on a frozen lake when the ice really isn't thick enough. We had one die just yesterday. He'd probably never seen that lake with a complete covering of ice.
But it also leads to kids simply adding an extra layer of socks or a scarf and thinking their prepared for an hour in the wind that literally sucks out the bodies heat and freezes their exposed skin. The thought that their car might stall, quit or get hit never occurs to people who don't take these extreme temps and winds seriously. "Aw, Dad!..." Of course, most teenagers are invincible...
But I'm sure our northern neighbors had no ill intent when they sent part their Winter down... well, I'm sorta sure...
Different countries have different 'weapons!'