lol I know it would never be implemented, but still a good idea lol
If handling articles older than 2 weeks is too expensive, you could just export whole feed stuff to xMind!
It’s not the best Brain Mapping app, but it’s damn good to handles tree-structured data. And has cool icons that can be used to distinguish folders, feeds, tags, ranked and saved articles!
Start with root folders, then nested, then inteligence sorted ranks, then tags and finally articles inside.
We can just download this exported file and damnly delete all articles! And we go taking them from xMind and reading them!