Sometimes one stumbles across (old) questions that are specific to very outdated software versions, where the answers also contribute nothing relevant for today's likely users. The questions were meaningful at the time, but are no longer helpful now.
- Should we be closing or even deleting such questions?
- If so, under what criteria? (How old? What if answers contain something salvageable?)
- What close reason, and do we need to wordsmith close reasons to be better applicable?
I recently came across GDAL version & QGIS, dealing with GDAL 2.1.1 vs 2.1.2 and QGIS 2.14 vs 2.18. We're now up to GDAL 3.3 and QGIS 3.16+. I voted to close with the Custom / non-reproducible close reason. Another frequent moderator concurred and the close has happened. So this pretty non-controversial example is solved.
However, we have lots of other, though sometimes less egregious similar examples (random example: "Add Delimited Text Layer" plugin is enabled, but does not show up in the plugin menu). And the wording of the non-reproducible close reason isn't a perfect fit. It says:
This problem cannot or can no longer be reproduced. Changes to the system or to the asker's circumstances may have rendered the question obsolete, or the question does not include a procedure to enable potential answerers to reproduce the same symptoms. Such questions are off-topic as they are unlikely to help future readers, but editing them to include more details can lead to re-opening.
This sorta applies, and does so better than other reasons I could find, but it's not a perfect fit.