Not project, need depth concept

Building projects is fun like any project - web application, android application, or like integrating a ml model, etc. But nowadays, i believe it is not a distinguish factor to stand in tech. One can easily prompt to ai and build it. Instead, we should focus on more in-depth concepts, let say in the web, know how v8 engin internally works, or in db how data is being stored and what the algorithms are being used. In ml learn about maths or algo. How kernal works, how can someone build own redis or how lru cache works etc etc. Basically in the field of softwere engineering more focus should go on internal things. Not like knowing a framework or tech tools.

What's your opinion?