I have worked a few sexual harassment cases in my career. Whenever there was a false allegation, things fell apart very rapidly and spectacularly. An employee accused her boss of threatening to fire her if she did not have sex with her and said coworkers were groping her and propositioning her. The boss admitted to a consensual relationship, which was still an HR problem. But that made the investigation easier as we told everyone that we knew the employee was having sex with her boss and that they did not have to lie to protect anyone. One by one, employees admitted to having a consensual relationship with this woman. She would even go out to the parking lot during lunch to have sex with coworkers. When confronted with this, she quickly recanted and revealed that she was being treated for bipolar disorder.
Whenever the allegations were true, it played out much like Blasey/Kavanagh. The accuser's recollection was very vivid, but memory of some subsequent events were not as clear. The accused threw a tantrum. it boiled down to a he said/she said about what happened behind closed doors.
We had an attorney who was propositioned by a judge behind closed doors. It was not, "I think you are pretty, maybe we could go get drinks sometime." It was x-rated and completely out of the blue. She did not want to do anything about it because she was a 3 year attorney and did not want to hurt her career by having media reports come up whenever you googled her name. Some at the firm thought that she just made it up to cover for flirting with the judge. She was definitely a very attractive woman and could be a flirt. Then, the news broke a story about three other attorneys coming forward accusing the judge of sexual harassment. He was removed from the bench and disbarred.