They know that they themselves aren't satisfied with personality alone but they genuinely believe through having the right personality even an ugly man can score eventually. they think this way because they're projecting. regardless of how ugly a woman is she will get approached by men at least 10 times in her life. hence, they believe that even if a man is ugly there'll at least be one girl out there who likes him even when that girl will never be them personally. it's paradoxical but u can't count on women to be pragmatic.