None of the women I saw in those pictures seem to have particularly unattainable or exaggerated physiques. In fact, they look like average, healthy body types easily attainable by regular diet and exercise.

Claiming that "only a very small percentage of the population can ever achieve these shapes" smacks as totally false to me. Do you have any data or sources to back that up?

edit: Would the downvoters care to contribute? I asked for some data or, at the very least, some sound reasoning for the claim that it's literally impossible for the majority of people to have healthy physiques.