Great advice and examination of the context we live in today wrt to information and past examples. SAVE THE DATA OFFLINE!
You limited your timeline for examination of the loss of data and people who held data. This is, of course, appropriate.
However, the first time in my life where it was clear that a cover up involved the unexplained deaths of people critical to exposing the truth was following the JFK assassination. So many witnesses and others who could testify as to the truth of events experienced untimely deaths. That became the template.
We really do need to lay the foundation in our habits NOW as we face the Memory Hole manipulation of Big Brother and the slipping away of the truth in flexible documentation of that truth provided by those who do not want the truth to be readily available.
Absolutely agree, except I think it may have started LOOOOOOOOONG before JFK.
However, I think a lot of the current batch of coverups can be directly traced back to the JFK assassination. I think it has tie-ins to Mena, OKC, 9/11, and more.
I also have considered the possibility that TPTB are pushing everything to the internet because that makes it so much easier to rewrite history. Books last for a long time, but history on the internet can be instantaneously destroyed or rewritten. (Just think about Wikipedia and how non-PC edits are quickly removed and replaced.)