Some witnesses took this to mean Armageddon
Not just "some", as later WTS attempts to whitewash the whole fiasco would have us believe (but which will never work on those of us who were there and experienced the whole debacle). Furthermore, the writers WTS literature carefully worded all references to 1975 make it clear that this was the conclusion they wanted their readers to reach:
- i.e. that it was a "probability" rather than a "possibility".
Even the 1980 WTS literature that you cite admits that the Watchtower writers fell for their own propaganda! And it was pity help any of the R&F in the congregations who in any way doubted that 1975 would see Armageddon - such JW swear words as "immature" or "worldly" would then feature prominently!
Some witnesses took this to mean Armageddon? More like some witnesses may have still had their doubts - but only some (and they were well advised to keep their mouths shut about it, too!)
Bill.
PS: Good luck in your attempts to rewrite history - you are going to need it!