> Claude can so the expert stuff with a non-expert (at least in their mind)

Opus is far better at most surface-level tasks than it is at tasks that require deep knowledge and understanding of domains; someone who is a complete generalist (who thus has only surface level knowledge in many, many things) is far more replaceable with LLMs than someone who has deep knowledge in one.

Consider the way LLMs actually are created; they are not created from billions of repos with deep knowledge behind them. The majority of their knowledge comes from a massive amount of surface-level work that's been done and can be sampled from: React starter templates, starter templates + what little customization someone needed, blog-tutorial-level stuff.