It's hard to overstate the extent to which the FBI-Twitter-Hunter Biden narrative promoted by Musk depends on narrative over evidence. https://www.washingtonpost.com/politics/2022/12/20/twitter-fbi-story-relies-far-more-insinuation-than-evidence/
The Twitter-FBI story relies far more on insinuation than evidence

What's been revealed is vague or clearly innocuous. What's presented — and therefore believed — is far more shocking.

The Washington Post

@pbump this last part hit the spot:

“The worry isn’t that Musk might nonetheless believe the story he’s presenting the world. It’s that so many other people, unable to know what’s being withheld or unable to take the time to understand the fuller context, are eager to believe it too.”