More seriously, they are just wrong, wrong, wrong in criticizing the phrase "black ice" as being meaningless. Maybe they don't have that up in Sault Ste. Marie, Michigan/Ontario, but where I come from black ice is a thin layer of transparent ice that takes on the color of the road. I guess in the Twin Saults, ice is always thick and opaque (and probably year-round....but I digress). Ah, the limited world view of the provincial.
I could go on with this exercise, but do I really need to?