This seems a little partial and hard to implement consistently. Can we assume the same metric will be applied to every Robert Woodward story, or any of many single-sector journalists with a lengthy track record, such as Radley Balko who has spent years writing about policing?
I also don't think adding a question mark to the headline clarifies; I can treat an assertion with skepticism, but 'How America took out the Nord Stream pipeline?' reads like a submission from a non-native English speaker, of the sort which often clutter up the New submissions page.