Counterpoint: During the polar vortex everyone was told that staying outside in the -40 or lower temperatures for more than five minutes risked frost bite. I worked 2nd shift so I was getting out dead of night at the coldest time, walking to the back of the lot to a car covered in a sheet of ice that simply did not allow me to even open the door to physically start it. That's a 4-5 minute walk already to a car that I can't open, who knows how long to chip away ice I can't see, sometimes can't even reach leading to struggling with the door using brute force trying to get leverage standing on icy pavement just to FINALLY enter my car, which is still -40 inside.
Or I could have had remote start and skipped the potentially lost fingers. Thank goodness I had coworkers who started staying behind to help those that didn't.
Not when your door is frozen shut. I wrote another comment detailing my personal struggle as a second shift worker during the polar vortex in -40 degree weather. The guideline was five minutes before you began to risk serious damage, and that was about the length of my walk through the lot. Have you tried opening a car frozen shut by a literal sheet of ice while standing on another sheet of ice while your joints are already starting to stiffen from the cold despite the layers of winter clothing you're wearing? Remote start stopped being a luxury for me when the Midwest winters started getting deadly cold.