Piracy? No one wants to play random early versions of Runescape. It's purely about preservation.
An example use case here, an interactive world map with a slider that lets you see how it was updated through the years: https://mejrs.github.io/historical
I've done a quick search through that repo and its dependencies, and I see no mention of the project above. How do you that they're using the files from there?
An example use case here, an interactive world map with a slider that lets you see how it was updated through the years: https://mejrs.github.io/historical