Freeze LLM progress right here and the future is still totally inconcievable. Humans who have only ever known being able to talk to machines...

Disagree. There's lots of products and goods that have become less fancy as a result of changes in labor/material cost as industrialization ran its course and the old way is considered the fancy way.

Wood furniture joined with glue and pegs rather than inserts and screws. Solid wood furniture at all. Leather and natural fibers gave way to plastics. Ornate castings gave way to simple stampings and simply castings (where things are still cast).