We had the same situation here in December, snowstorm and cars stuck for many hours, ICE lovers claim it was filled with empty EVs, I think it was one EV and the rest was ICE abandoned or empty.
Her we often use a system of convoys if the weather bad on the mountain roads, a plow truck and a safety car at the end, when I was doing this job it was no EVs but it would be the same procedure, check fuel level, low fuel you would be denied to follow the convoi, the same happened if you where badly prepared or for example had a new born baby or a car that where in bad shape.
We had the authority to deny any car if we felt it was a potential problem.
In a event of getting the convoi stuck in the snow a EV is much safer, you can't run a gas engine if your car is snowed down, exhauste might enter the car, and it have happend that all have to be rescued out of the cars and the cars have been abandoned for days in the mountains.