I think this can be true for large swaths of the information that will be lost, but there’s also a lot that will be lost that nobody is currently backing up. For instance:
Recordings people think are backed up simply because they’re misinformed, only to realize all their old, say, childhood gaming videos are now lost forever
Clips that show damning behavior about a popular public figure that weren’t caught before, but could become evidence in a future investigation
Clips previously thought to not be relevant, that then become relevant later on for some kind of general historical context (e.g. Campaigns started trying to figure out if something was in a game at a given time in a game with very little actual software backed up, devlog streams that contained lost features that could explain why a game then developed the way it is today, etc)
I think this can be true for large swaths of the information that will be lost, but there’s also a lot that will be lost that nobody is currently backing up. For instance: