The internet is self-cleaning. Materials that no one cares to maintain rots away.
It’s more like a city than a library. Houses need to be maintained and used or they eventually become unusable and will be torn down and replaced or simply abandoned.
I think some early thoughts about the web was that it was going to be a library of knowledge. Those ideas were misguided I think. It’s a chaotic city and it probably always will be. The article makes some good points about how to increase longevity and while it can certainly help, it probably won’t make a huge difference in most cases.