Hard to tell. Leo Lyons routinely screws up well known and easily looked up facts all on his own, but he may have gotten an assist from rightwing "news".
Senate Democrats Investigate a New Allegation of Sexual Misconduct, from Brett Kavanaugh’s College Years
Feinstein did not find the 2nd accuser, she went to The New Yorker after, "The allegation was conveyed to Democratic senators by a civil-rights lawyer."
He's not accused of merely "exposing himself". He's accused of:
The witnesses are not just the smaller number of people in the room but rather people who heard about it at the time and:A third male student then exposed himself to her. “I remember a penis being in front of my face,” she said. “I knew that’s not what I wanted, even in that state of mind.” She recalled remarking, “That’s not a real penis,” and the other students laughing at her confusion and taunting her, one encouraging her to “kiss it.” She said that she pushed the person away, touching it in the process. Ramirez, who was raised a devout Catholic, in Connecticut, said that she was shaken. “I wasn’t going to touch a penis until I was married,” she said. “I was embarrassed and ashamed and humiliated.” She remembers Kavanaugh standing to her right and laughing, pulling up his pants. “Brett was laughing,” she said. “I can still see his face, and his hips coming forward, like when you pull up your pants.”
It's a scream that a supposed former LEO so often screws up things that are so easily investigated.She recalled another male student shouting about the incident. “Somebody yelled down the hall, ‘Brett Kavanaugh just put his penis in Debbie’s face,’ ” she said. “It was his full name. I don’t think it was just ‘Brett.’ And I remember hearing and being mortified that this was out there.”