The Internet Archive is massive force for good and a huge not-for profit effort.
However in certain aspects of preservation of History (for example if deemed high value at a national level) we should also expect national archives to duplicate the effort to preserve this and other information with historic value.
I wonder how much would such national digital archives resist rewriting of history.
It is much harder to doctor hard copies of newspapers or books. You can burn them, but altering them is a complicated challenge, and someone may own another copy of the originals.
With digital records, the temptation is stronger because the editing is easier, and other "unofficial" copies that diverge from the officially archived version may be declared to be fake/misinformation etc.
Well, I have some experience with the Danish National Archives, but may be out of date.
First, the rule used to be that they could crawl all Danish sites or having interest to Danish government (so I guess also news reports of Denmark or discussion in other nations) ignoring robots.txt, which yes I found that to be a very wrong headed rule but that's what it was. So obviously they need to put in a good deal of effort to get content into the archives that would be getting blocked otherwise.
At the same time governmental records, including the records and cases in communities around the country get added to archives (but of course are only available to scholars at some future date)
So theoretically this is a lot of data. I suppose other national archives probably have similar rules and situations.
It would seem unlikely that one could rewrite history easily with so much data, without alerting people to what you were doing. But I guess that is actually the lesson of Fascism, they don't care if you see what they're doing.
They will do it and then hope you forget how it got to be like it is.
However in certain aspects of preservation of History (for example if deemed high value at a national level) we should also expect national archives to duplicate the effort to preserve this and other information with historic value.