> People have done this work by hand for years and years, and now when they've been using LLMs to do it 5x faster for a couple of years, suddenly they'd be unable to work the traditional way?

Yes. Not completely unable all at once, but they certainly get worse at it fast.

https://www.thelancet.com/journals/langas/article/PIIS2468-1...

Losing skills due to over-reliance on technology is not a new phenomenon and not exclusive to LLM use, but they of course exacerbate it by so pervasively touching so many areas.

https://www.scientificamerican.com/article/how-gps-weakens-m...