Your analysis reminds me of https://cendyne.dev/posts/2023-05-11-reverse-centaur-chickenization-chatgpt.html#chickenization, and I agree that there is an implicit promise of automating qualified labor away, but on the other hand, the problem is not necessarily in reducing the average labor time required for a given activity but what it means under capitalism.
Personally, while I find LLMs valuable for a certain subset of tasks I also do not think they are able to entirely replace people in their current form. This won't stop capitalists from trying, unfortunately.
Do you happen to remember the name of the episode? Would like to show this to a few friends