How so?

It would be finding out how much does perceived fertility impacts what is considered attractive (already a subjective measure that changes based on culture and history). They whole point would to be if there is, and how much, a subconscious weighting based on that.

Similar studies have been done on equally frivolous (in the context that someone being fertile or not does not change they worth or value as a person) variables and generally they have interesting results.

Not really related to the subject of the thread, hence the prefix of "tangent", except the whole thing is around a beauty pageant where we already reduce women to the role of object and score them on it.