It's a waste of resources.
Only from the central-planning point of view.
In a fluid and dynamic system the fact that something was useful a couple of years ago does not mean that it's still useful now. Your "waste of resources" is re-confirmation that X is still useful and can draw people, otherwise it's deadwood and should be discarded to die in a fire.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.