It's also possible he's a once great journalist who has gone off the rails. Which seems likely given the fact that the editors at a publication he founded refused to publish this piece.
Without the context, it's not being given to the reader to judge why this is a story, the real provonance of the maguffin-laptop, if it really has any impact in the Biden vs Trump question or is just noise...
Moreover I feel like this would be a bad precedent. Suppose Biden wins now and Trump runs again in 2024, I personally would not like a similar grace being offered to him (with no evidence of interference).