If a complaint was filed and he's called for the records to be searched, why the outrage?
It seems like a pretty clear case to me, either the records exist or they do not. I honestly don't know what people were expecting, there is nothing wrong with his approach to this. The water gets murky if there isn't a complaint filed but that isn't what has been claimed here, these archives aren't within Biden's control, there is no hiding here.
Outside of saying he did it, nothing he said would have been good enough to satisfy some people regardless of his actual guilt. That is not to say that she is not to be believed but her claims should have a clear audit trail in this case, so his guilt will be determined by the result of this search.