The linked article is talking about something that the author thinks is valuable, and if you read it, you might agree (the story about Roger Moore).
People's history have value, most of us see that and the Internet Archive creators and maintainers certainly see that way too. It's pretty arrogant to say that people's posts are less valuable than some storage space. And contrary to the direction the world is moving too.
If people where like you the Internet Archive would probably not exist, only Wikipedia. Remember Geocities? It wasn't the pinnacle of insightful speech either, but it was history.
The Internet Archive is a nonprofit digital library, and home to a giant archive of the public web since 1996. Our web archive is viewable for free via the Wayback Machine.
GeoCities was an important outlet for personal expression on the Web for almost 15 years, but was discontinued on October 26, 2009.
Of course I understand that budget constrictions would make it impossible to keep the whole Facebook on the IA, but that's not a subject of importance or value, but of real possibilities. If we could keep the pages that someone thinks is important enough to save to the archive and make public (like the one in the article), that would be a great improvement over the current situation.