[Defeat]

I know there's a 90 day warning, but clearly no one is paying attention.

You certainly have a valid point, however although the majority of old threads are deemed futile, there are many that still serve a purpose to remain active.

For Instance, If a given thread Is only 6 months old and the link Is dead but the OP Is still actively contributing, a reply to "update the link" Is not classed as grave digging. This Is classified as "Please only reply If you have a good reason to", as per the message above the text box. As such, closing threads Is performed on a case-by-case basis.

How rare is that though?
I tried to come up with situations in which a thread needs to be open for more than a year with no replies and I could come up with none.