This isn't a blanket rule. Upstate NY with 4' of lake effect? Sure.

In the Rockies where the interstates are a death trap of semi trucks, and lost Texans/Californians? Side roads all the time. Flip it to 4x4 and drive in the snow. Better than crosswinds, ground blizzards, and sheet ice whilst dodging idiots on the interstates (which themselves close regularly 6 months a year)