Edit: https://www.reuters.com/world/us/trump-pardons-silk-road-fou...
Yep, Twitter has had aggressive authentication gating for almost 2yrs now and HN frequently has Twitter links
Here twitter is not the main source, there are better ones (both better quality and more user friendly).
I would like a rule to avoid submissions that are login walled unless this is the primary source and an open mirror is available.