> easy to make changes to later

IMO it's still a problem with LLMs; we still have to build in a way that makes it easier for an LLM to make changes later and arguably it's the same things that made software development easier for humans. IME LLMs tend to not know how to do that for themselves and instead just amplify/copy patterns that already exist.

If an LLM can't pave the way for itself then ultimately shared understanding is required to take advantage of LLMs in the first place.