Coastal regions not immune to deep cold
t doesn't have to be Norway or the Pole. I recently left my Model Y at a friend's house in Seattle for a week and when we were packing up in 21F weather, I thought I'd warm up the cabin. That's when I got the message about preparing the battery before driving. It took about 30 minutes to warm up, and house current could warm the cabin and the battery simultaneously. It wasn't a big problem in this case, but even in coastal Seattle it can be cold enough to need thawing.
I used to live in Edmonton and it was very common for people to run an ICE vehicle for 20 minutes before driving off, even if it was plugged into an engine warmer. Weather that cold can be very hard on an engine--engine oil is only warmish and the block is still very cold. Other parts of the car, like the suspension and doors. were making odd noises as well, so it's best to avoid driving more than you must.