It must be very worrying at present for people in the US that have EVs and no power as it seems millions are without power and no idea when power will be restored...
There are several areas across Canada and the USA which are used to dealing with fairly extreme weather and whilst this may be colder than usual they have probably already got effective ways of dealing and continuing to live under these conditions. Its mainly the big cities in the USA which are not best set up for these conditions and yes it's dreadful to hear of deaths due to the weather.
Most EV drivers don't get home with a fully discharged battery, so their car will most likely still have some driving range left very much like ICE drivers (no pun intended).
In fact will more recent EV's with Vehicle to Grid or Vehicle to Load capability the fact the car may still have some charge left could help the owner power some of their home, where an ICE vehicle couldn't.
As others have pointed out with no power most Dino juice stations can't deliver fuel, and even if they had hand cranked pumps (and most don't) with no meterage and the power and telecoms down, most people couldn't pay for the fuel anyway.
The Artic Blast across N. America is likely to affect both EV and ICE vehicle owners very much the same.