Now that is pure bullshit! Here in the real world we like so called _facts_ which, incidentally, show that you are completely wrong. People _should_ logically drive slower in those situations but they don't - and modern features like airbags + misc. break assist features makes some people think they can drive however they want.
IME, people DO slow down on icy roads. However, my experience might not be accurate, since I'm looking at the cars that are still on the road, not the ones that are on the 6PM news when they're talking about all the accidents.