The thing I always think about when I think about societies like this is, They are on a timer. Eventually, they will have no choice to but accept mechanization. Because humans will not able to farm in 90% humidity due to wetbulb physics. Animal husbandry will most likely be a WORSE horror show than what we have now, due to the fact that most live stock will similarly be unable to deal with the heat. And lets be honest, most of the farms we have now are unsustainable. So famine is definitely a thing we'll have to consider.
Not an answer, but I'm modeling it as a way to pull stability out of non stable region of space for a soliton field. The gradient the void causes allows the soliton to find a useful basin.
You are missing one important bit. Semantic Gravity Sieves. Important data in the metadata collapses together, allowing grouped indexing. Something like a DAG allows the logic to be addressed consistently.
I just realized, one of the things that people might start doing is making a gamma model of their personality. I won't even approach who they were as a person, but it will give their Descendants (or bored researchers) a 60% approximation of who they were and their views. (60% is pulled from nowhere to justify my gamma designation, since there isn't a good scale for personality mirror quality for LLMs as far as I'm aware.)