Did you actually read the article? Founders aren't being judged in the same way, due to their gender.
You see the same thing in academia: give some professional mathematicians some identical papers, but randomly with male or female names on them, and they'll rate the ones with male names more highly than their peers who are given an identical paper with a female name. Unfortunately, both male and female mathematicians bias their judgement in the same way, so simply having more female mathematicians (or investors) goes less far than one might think.
