Let's take software development as an example - in 70 years of coding we have automated many things, we have plenty of libraries and languages at our fingertips. And yet we have more devs than ever, how can that be? Computers were five orders of magnitude slower 3-4 decades ago. Where did that power go into? We can clearly do today everything we did back then with less people. In reality we invented databases, applications, internet, and cloud computing, and now we have more work than ever.
Another example - in ML we suddenly got to a point where almost everything we did pre-2020 is now trivial. Why are we hiring even more devs to do NLP tasks? Our old skills suddenly became outdated, we had to learn a new paradigm, and here we are, with lots of work. Even labeling is seeing a surge - you'd think we don't need it anymore since LLMs are so smart, but in reality we need even more benchmarks and tests now that shit got serious.
Same for medicine and other fields - they all seen massive improvements and yet humans work just as hard.