Why is the reported MW cached date for almost all "Special pages>Maintenance reports" pages pointing way back into 2016 ?
In case its related to an intentional action (probably). Why was that done ?
And ... are those pages still working ? Some seem to be (well kinda), others not so mush.
Those pages 'can' be useful for site administration purposes. But for that they need to be kept kinda lean. Not always easy ... but if possible a good thing.