Censored archives are typically called "History"...
That's what "History" is all about: deleting what you don't want (or don't care about) and keeping that which supports your position.
For example, the current "revisionist" review of American history paints the founding fathers in a much less flattering (but, given contemporary corollary documents, more realistic) light. Not the "American History" I studied in school, but certainly one that makes more sense. And the set of "new facts" exposes how much material was "left out" of the previous "official" record.
Why we would expect the web to be any different is certainly puzzling.