Or just 2-10x the amount of work with the same people? There will be some economic equilibrium, but I don't imagine companies seeing competitors pumping out 10x the amount of work going "Oh we should fire 9/10ths of our staff to accomplish the same amount of work". We're entering unknown territory though, so I'm not sure existing economic models really are going to be able to predict the outcomes and impacts of this enormous technological shift.
I think 2 is correct. I don't think any job falls into category 3, in the long-term at least.
I think all of us should be (a) seeking to add value to the world, (b) seeking to raise the quality of life for all humans. I don't think AI changes that. Once we get over the initial hurdles and hiccups, it will hopefully make it a lot easier. (Some will probably call this idea naive).
I would just continue to learn as much as you can about AI, and not just LLMs.