Just talking with the more legal viewpoint. We don’t know what might have inspired her to come forth to her therapist, either, and those things are questionable as well. Does certainly lend credence to establishing that this is not some lately made-up story, but it’s also not contemporaneous with the event.
If he had gone with a more nuanced position, that something may have happened, but he remembers it differently from her, I don’t think he’d have any problems with his nomination. Then, a hearing might only really establish that two drunk teenagers in a room perceive things like consent differently.
The only thing that makes this a big deal is that he has taken such an unequivocal stance in opposition that it makes it clear that one of them Has to be lying. And if it’s him, then he should never be on the Supreme Court.