The caricature you sketch definitely does exist

But so does the IT hobbyist using an open source model with local hardware and customised training.

Of course i just realise that person wouldn’t call it an agent, they wouldn’t tell you to interview the agent and probably wisely frame it as:

“I develop my own tools and automation systems to free up time and resources for more important projects” at most refer to “machine learning” and absolute avoid using the term “ai”.

If you're smart, you'd use your personal computer running a local AI model. It's your expertise that made working prompts because AI on its own is trash. So when you leave, your knowledge goes with you.