AI may replace the need for coding but not the need for understanding how it works. It is as simple as that.

We still need / want to study physics to understand the universe despite the fact that it is a process that we have no control over.

AI is the same. Even when code is written by AGI you still need to be able to understand what it is and how it works.

The alternative is complete abdication and resembles a lot more like religion or even a cult.

Trust but verify.