I am not blind but I do like large breasts.
I like small and medium ones too.
'Somehow signalled' ??The evolutionary explanations for these findings share the logic that lower ratios somehow signaled ancestral men that a woman would produce more or fitter offspring
I am pretty sure that ancestral men gave no thought at all to 'fitter offspring'. They do not even today.
Lust ??Over the past two decades, researchers have been looking at whether cinched yet sumptuous female body shapes, corresponding to low waist-to-hip ratios, are preferred by men across societies and have been favored across time, the idea being that if the answer is yes, evolutionary factors would seem to outweigh culture in determining at least this one aspect of lust.
Where does that come in?
Gordon Bennett, this is all an outcome of sloppy academic nonsense. Speculation and post hoc reasoning as explanation.