I guess most, honestly

I mean, who leaves their tent open in the Antarctic?

Not saying it’s real, but… Someone who wants to take a photo like this? In the summer (which it would be since it’s light out) it’s not thaaat cold near the coast. Maybe -10 C, but probably more like +5 these days, sometimes much warmer. Additionally, for a single-walled tent, ventilation is extremely important or else moisture build up will condense on the tent and get you wet, which you really don’t want when it’s cold.