A news site that shows only today is a screen. A newspaper has a morgue. The morgue is how a reader checks whether we said something foolish in March, and how we check ourselves.
I want the old stories to stay dated. A piece from a prior year should wear that year and be clearly marked as past coverage. Redating it to keep it on the front would be a kind of lie. The front is for what is new. The archive is for what was true on the day, as far as we could source it.