blondie: the footwear is not suitable - they are not walking on highways, pavements or even smooth ground. Snow or no snow.
If you walk on stones and rocks like that you need hiking boots with ankle support and good tread. A turned ankle can ruin the whole expedition as a limping person is tended to. (As opposed to getting out of an SUV and walking 50 yards to make a photo opportunity)
I've walked and scrambled in similar terrain enough times and in groups with women. No woman in real life wears that gear in those conditions - except in the narrow minds of cult leaders who decide what should be worn and by which gender.
It is the subliminal message of "if they can wear skirts in these conditions then so can you sister" that I am more derisory of. It indicates the borg mentality is not changing and they will suffer even worse recruitment levels than they would have.