The principle of no aspect being the cause of too low value still applies.

How many guys are out of Morena Baccarin's league because her breasts are small? She has everything else going for her so her weakest attribute is compensated for.

To call the weakest attribute of someone you reject the "true reason" makes sense only if it is a lone sufficient condition, which it probably won't be even for someone who you no longer want to be with because you think you can do better.