The "how" is now automated; the "why" is where the value lies. Understanding data structures and core engineering principles is the only way to avoid being replaced by a model that can write boilerplate faster than you can type.
"The how is automated; the why is where the value lies"—that’s a perfect summary. If you can't explain why you chose a NoSQL database over a Relational one for a specific task, you’re essentially just a middleman for the LLM.