I feel like this detail about the Martinez accusation is getting lost in the noise a bit. From the New Yorker magazine article:
The classmate said that he is “one-hundred-per-cent sure” that he was told at the time that Kavanaugh was the student who exposed himself to Ramirez. He independently recalled many of the same details offered by Ramirez, including that a male student had encouraged Kavanaugh as he exposed himself. The classmate, like Ramirez, recalled that the party took place in a common room on the first floor in Entryway B of Lawrance Hall, during their freshman year. “I’ve known this all along,” he said. “It’s been on my mind all these years when his name came up. It was a big deal.” The story stayed with him, he said, because it was disturbing and seemed outside the bounds of typically acceptable behavior, even during heavy drinking at parties on campus. The classmate said that he had been shocked, but not necessarily surprised, because the social group to which Kavanaugh belonged often drank to excess. He recalled Kavanaugh as “relatively shy” until he drank, at which point he said that Kavanaugh could become “aggressive and even belligerent.”