You're reading way too much into the message. You should take Q's advice and read into the accounts and how they have changed from the '80s to today.
Just buy history books from those eras and you'll see for yourself. Most can be found cheaply or at your local library.
https://www.textbooks.com/Catalog/GBT/1960s-1970s.php
https://www.abebooks.com/books/find/history.shtml
https://www.textbooks.com/Catalog/GBV/1980s-1990s.php
https://www.worldcat.org/title/world-war-ii-a-short-history/oclc/277205366
https://www.goodreads.com/book/show/191413.The_First_World_War
https://www.goodreads.com/list/show/2809.Best_World_War_II_history
https://www.smithsonianmag.com/history/five-books-on-world-war-i-199/
This is the best way I can describe to you:
All books have publish dates. All books have re-publish dates. E.g. a history book/textbook written in 1980 may go through several "updates" to reflect changing historical "discoveries", so that book published in 1980 will receive an "update" in 1993 and be republished. Again new "discoveries" may have been unearthed in 2012 and the book may receive yet another update and be republished in 2012.
OR
An historical tome/textbook on how WWI started.is published by an author in 1992 with all the information available at that time.
Then, in 2001 another author has it's book published on the same topic, however the reasons for WWI's inception has changed.
Why? Opinion or facts?
Then in 2014 yet another book on exactly the same subject by yet another author is published showing a completely different view on how WWI started. Did something change between 1992 and 2014? Opinions? World views? Political leanings? Sympathies to one side or the other?
Sit down with all three books opened on that subject alone (Origins of WWI) from the 1990s to the 2010s at your kitchen table and see the difference in accounts of how WWI began.
OR
Pick any subject surrounding the political/social/economic/diplomatic conditions recorded by history tomes/textbooks from 1980s, 1990s, 2000s and 2010s respectively during WWI and/or WWII and see what changes in the accounts written about the same conditions/causes during each era (i.e. 1980s to 2010s). Dramatic differrences.
It does not matter if scholarly tome written for general public or a textbook written for students and from which they are taught.
Sorry for length, but this is an important crumb from Q and needs serious thought and digging.
I won't dig for you, but I know exactly about what Q is speaking! It's true as the nose on our faces!
Not grandstanding. Just answering questions and to help others dig on the crumb.
I AM digging.I WILL share more when I find more.
The more eyes we have on the dig, though, will reveal more info and more insight.
I am profoundly ugly, though.