I care about the complexity because I want/need to maintain the code down the line. I find it much easier to maintain shorter, simpler code than long, complex code.

Also because it was an experiment. I wanted to see how it would do and how reasonable the code it wrote was.

I'm sure somebody is going to point out that it was written by AI and is a toy, therefore it can be maintained by AI. I share your desire to have human maintainable code, but I imagine one of the goals of AI written code is to allow the AI to manage it, end-to-end.