archive.org also offers a way to save a snapshot of a page. [1] I just do not use it frequently because it takes more effort to navigate to it.
From what I read, this attempt to erase history was cited by one of the financial backers who was supposedly not a fan of KF, but was less of a fan of censorship from utilities such as archive.org.
As John Gilmore famously said "The Net interprets censorship as damage and routes around it."