The point, I think, is that a lot of the speculation about what ChatGPT will do is operating under the assumption that it's fully autonomous, not highly autonomous. Which is quite a gulf.

A highly autonomous LLM used to generate code can be used as a productivity enhancer by software developers. A fully autonomous one could be used to eliminate software developers entirely.

A fully autonomous LLM lets me send out daily personalized marketing emails to every user who signs up for my service. A highly autonomous one requires me to spend time reviewing, which limits how many emails I can send out, though it still boosts my productivity.