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.
Re your other question, the answer is somewhere in the space demarcated by (1) yes, (2) we'll try, (3) moderation consistency is impossible, (4) we're always open to reader input. (I'm sorry that I'm responding in shorthand but I'm being inundated atm)
Seymour Hersh's unnamed source on how America took out the Nord Stream pipeline