Same level of engineer here - I feel that the importance of expertise has only increased, just that the language has changed. Think about the engineer who was an expert in Cobol and Fortran but didn't catch the C++ / Java wave. What would you say to them?

LLMs goof up, hallucinate, make many mistakes - especially in design or architecting phase. That's where the experience truly shines.

Plus, it let's you integrate things that you aren't good at (UI for me).