Nit: you appear to be describing per se defamation (accusations of heinous actions), but this is just a small subset of all defamation claims. So long as damages are incurred, false statements of fact can and do routinely incur liability, turning on the credibility of the statements, the recklessness (or deliberate deceptive intent) with which they're made, &c.

It's definitely not the case that a newsmagazine would be in the clear simply because designing Bitcoin isn't a crime (although other factors probably do rule defamation out).