We have the Internet Archive, we have Wikipedia page histories, but everything else is ephemeral. If Archive.org ever goes the way of the Library of Alexandria, we'll have lost irreplaceable knowledge of the web itself, and the cultures that existed on it. It will live on only in living memory, but this is also transient, and soon nobody will live who remembers what this time period was like. Wikipedia will not reflect it, you'd have to dig through page histories to find fragments, like historians and archaeologists sifting through ancient manuscripts and ruins for clues.
A potential dark age is forming, and avoiding it right now hinges entirely on the continued efforts of two donation-funded organizations, one of which makes it increasingly harder to view the past, the other facing legal disputes that could see it shut down. I think we need to make archiving the present important, so it does not become a mysterious, inscrutable past for our descendants.