The trouble with all these schemes is that it’s totally contrary to poweful real world trends. The surface of the Earth has an overwhelming abundance of rural land that is incredibly hospitable to life. And these places are depopulating because people prefer living in cities. How are you gonna get people to move to the bottom of the sea, or Mars, if they don’t even want to move to West Virginia?

LLMs aren’t capable of maintaining an even remotely convincing simulacrum of human connection,

Eh, maybe, maybe not. 99% of the human-written stuff in IM chats, or posted to social media, is superficial fluff that a fine-tuned LLM should have no problem imitating. It’s still relatively easy to recognize AI models outputs in their default settings, because of their characteristic earnest/helpful tone and writing style, but that’s quite easily adjustable.

One example worth considering: people are already using fine tuned LLMs to copilot tabletop RPGs, with decent success. In that setting, you don’t need fine literature, just a “good enough” quality of prose. And that is already far exceeding the average quality that you see in social media.