Jobs won't dissolve into the ether. If the human civilization system grows bigger and complex, it necessitates more people.
If humans were a high energy configuration in the evolution of intelligent systems, we'd never come into being. That Earth's ecosystem has begotten us indicates we're some low energy configuration for packing more information density into the energy flows from the Sun through Earth's biosphere.
Unless we create replicating machines, any machine system we build will only grow more complex by enabling more humans to work on it. We'd be in trouble if we somehow created autonomous self replicating and evolving machinery but chatbots built on natural language machine learning ain't it.