Wizards of the Coast offered a subscription service, years ago, called Dungeons & Dragons Insider (DDI), which offered utility much like the current D&D Beyond, in that it provided tools and content for playing the Dungeons & Dragons game to anyone willing to pony up the cash.
The DDI service has ended, and questions on the site about topics like what a good content base to start playing the game with can be have had answers making reference to it. The response to my editing the top answer has been nuanced, but negative (and I probably ought to have brought this to meta in the first place). What's to be done?
Is there an incentive to create new posts which are unlikely to become the new accepted answer (what passers-by see first when their searches bring them to the site)?
Is legacy content worth preserving outside of revision histories, in a situation where the game is still playable?
Why should helping new players take a back seat to holding a snapshot of the year 2015, when D&D Next was still fresh in everyone's minds?
From what I understand, it's discouraged to ask a new question that has the same spirit as an existing question, which is the question I would end up asking if I were given free rein: "What set of books makes a complete starter set for 4e?". Is there a way to use the StackExchange platform to handle game states that shift over the course of a decade or more, long after the original posters' interest has waned?