I'm sorry, I don't get your comment. What makes you think the approach or the code described in the article were developed by an LLM?

I don't know how the code was created.

But based on my experience with multiple project, both current frameworks and AI changed the game. I used to much more reply on existing software and cursing that they don't do what I want - as the time to create a personalized tool was simply much to afford. Now often it is quicker to create a personalized tool than fight with existing one.