Weird,my sons friend,Gerrit has had a tesla for quite a few years now here in Northern Ontario,
He hasnt had any problems with it in the cold weather.
There is a cold start feature on them where you plug them in to keep the batteries warm. Much the same as you might do a gas or diesel with a crankcase heater. He must've read the instructions or keep it in a heated structure.
Problem is these citidiots treat them like a car with no idea of plugging them in and even if they did its not like parking lots everywhere have the facilities.