This is a crucial distinction. We are seeing a shift where the "how" of coding is becoming a commodity, but the "why" of engineering is becoming more valuable than ever. Relying on AI for high-level architecture is essentially delegating responsibility without accountability. If you don't understand the trade-offs in your stack, you aren't managing a system—you're just supervising a black box. Master the fundamentals or get left behind when the generated code hits a bottleneck it wasn't designed to solve.