[price]

Take a look at the partners named at the bottom. From GitHub's perspective, this is in part a PR stunt. But the Internet Archive, and Software Heritage, are quite serious. The people in those organizations are there for the mission, and if they're in on this project it's because someone there believes it matters to their mission.

You're free not to care about what situation humans might be in in a thousand years or what they might need then. I can't say I spend any effort day to day working with that distant future in mind myself. But I'm glad there are people in our civilization who do.