> can generate just the bit of code that you actually need

Design is the key. Codebases (libraries and frameworks not exempt,) have a designed uniformity to them. How does a beginner learn to do this sort of design? Can it be acquired completely by the programmer who uses LLMs to generate their code? Can it be beneficial to recognize opinionated design in the output of an LLM? How do you come to recognize opinion?

In my personal history, I've worked alongside many programmers who only ever used frameworks. They did not have coding design sensibilities deeper than a social populist definition of "best practice." They looked to someone else to define what they can or cannot do. What is right to do.