It’s not about perfectly architected code. It’s more about code that is factored in such a way that you can extend/tweak it without needing to keep the whole of the system in your head at all times.

It’s fascinating watching the sudden resurgence of interest in software architecture after people are finding it helps LLMs move quickly. It has been similarly beneficial for humans as well. It’s not rocket science. It got maligned because it couldn’t be reduced to an npm package/discrete process that anyone could follow.