>>4267732That's enough to trick the brain into recognizing an image as a suitable partner, even if it's an inanimate picture. Reptilian brain is in charge of the most high order human functions, stuff lower than that doesn't even get processed, it is instead handled by a blind muscular response.
Lack of features gets interpreted as clear skin without a sickness. Slim body gets interpreted as a fitness measure in the age of overconsumption. And et cetera.