No, I wouldn't say it's super complex. I make custom 3D engines. It's just that you and I were probably never in any real competition anyway, because it's not super common to do what I do.

I will add that LLMs are very mediocre, bordering on bad, at any challenging or interesting 3D engine stuff. They're pretty decent at answering questions about surface API stuff (though, inexplicably, they're really shit at OpenGL which is odd because it has way more code out there written in it than any other API) and a bit about the APIs' structure, though.