The strange thing is that I've seen winter tires on some cars around here where we have mild winters. Sometimes performance winters, which I understand aren't quite as soft. Still seems a bit overkill for someone just taking a car up skiing a few times a year.
I’ll play devil’s advocate - Going skiing* a few times a year is absolutely justification for a set of snow tires.
Look, if a person is going skiing, they’re spending at least $180/day for each person for a lift ticket. At least $200/night for lodging. They’ve got thousands of dollars in equipment, even if they intend to rent skis.
A ski week for a family of four is easily several thousand dollars, perhaps into five figures if it’s a popular time of the year.
With all that at stake, why not throw $800 worth of tires on the car to be certain you can actually go?
Alternatively, if you live in, say, Denver, or Salt Lake City, you absolutely want to be able to get up to the mountain (complying with chain laws or just common sense) when it’s snowing. Those “few days” a year are very important days.
*I’ve been skiing for over forty years now. While I own my own gear (boots, skis, helmet, Google, Gore-Tex jacket and pants, gloves base layers, mid layers, etc.) the lift ticket prices have soared to nearly $200/day. I have the Epic Pass so that I can save on lift tickets. The lodging this year is insane. $800/night for a one Bedroom hotel or condo near the area on some weekends.