Survival of the fittest means death for the rest of the population. It means starvation, or getting eaten, or drowning or dying of disease.
Alarmists claim that they believe in evolution, but every time they see a Polar Bear make a funny face – they scream that this never used to happen before.
Eventually natural selection will kill off these idiots – because they will cut off their own energy and food supply, and will be mentally and physically unfit to take care of themselves in the harsh world they created. Perhaps they will get eaten by a bear.