Quite a bit there, and a thread that links to other threads. TLDR everything.
Too long, didnt read it all, but the analogy doesnt hold up.
A functional blockchain has all (or a vast majority) of the nodes on a given blockchain recording the same information (consensus) and solidifying previous blocks. Social narratives dont function this way.
If society was a blockchain it would break, there would be no hope for any trust at all.