Good post.
It is interesting how false narratives like ‘the stab in the back’ come to have such wide spread telling and belief that they become the accepted version of events for many people - even a whole country. I guess some of this is that it is always easier to have an external party to blame, even better if this external party is somewhat vague and nebulous.
I wonder if at the time there are several of these false narratives going around (and perhaps the real one too) and one of them happens to catch the public imagination so it gets told more, and more people want to use it and believe it, so that is the narrative that becomes known?