Especially nowadays, I know that my 72 Chevy had a instructions for cold start (<32 I believe) on the back of the driver's visor which included idling for a few minutes. I've noticed people tend to turn their car on after getting situated but I still have a habit of turning it over as soon as I get in to let it warm up even though that car is, sadly, gone for now.
I said less for a reason. Most people don't have to worry about -35C. Cars start reliably down to fairly low temperatures, so they don't need to worry about it.
Sure, it may be less important, but I'd hate for someone to think that means it's majorly less important (in other terms, unimportant).. letting a car warm up in cold weather is good for it, regardless of innovations.