Depends on your definition of "significantly" and "much of the time". I've only seen a maximum of ~30% range reduction, which would still be over 250 km, and would only account for about $4 worth of extra electricity spent in a week's worth of driving.

These cold temperatures only happen during 4 months of the year, and are definitely not every day. It is also worth mentioning that fuel consumption of gasoline vehicles also increases on cold days, so the added costs for either vehicle could be comparable.

I'm not saying that these vehicles can do everything, and I admit that charging infrastructure is way too underdeveloped to make these vehicles capable of inter-urban vehicles. But they do make a lot of sense for the everyday person to travel to anywhere within a major city center for work or play.