"I allow interview candidates to use agentic coding tools and candidates who do so consistently performed worse"

I have a similar impression. It seems to me that people get something that kind of works and then their interest runs out and they're left with a shallow understanding of the result and how it might be achieved. This seems detrimental to learning, which tends to happen when one is struggling.

"I strongly believe that chat is the least interesting interface to LLMs"

This is also something I agree with. When I work with databases, the best part is not sitting with an immediate client writing raw queries by hand.