These are all important questions. There is one way to answer them. Hunter Biden could dispute the contents of some content – any content – on this laptop. Has he done that?
Crimes have been committed against his property. I don't think it is up to him to answer to anything until that is resolved. Disputing something he doesn't even have access to is a guaranteed way to drag the situation further south, no matter what he says or does.
What seems to be coming out is that the laptop was missing for years before it showed up at the repair place. As such, there are a lot of alterations on it that occurred well after his last known access to it. There are also additions and deletions that occurred well after his last known access. So we know that anything that looks like evidence of something nefarious is tarnished. That's pretty much exactly what two unrelated forensics reports on the hard drive image said about it, so we have no choice but to take it as gospel unless a court (very unlikely) suggests otherwise.
So he really doesn't have anything to answer to, without investigating it himself first.
The vast majority of what people claim is on there are things we already know about him, and things he openly discusses in his book. So there is that, too. Currently his only accountability is to not add anything to the fire.
