Unfortunately llms are very good at creative hacks that undermine the whole design. I've caught it on the act multiple times. But I'm sure my code base by now is understandable at the surface level, but underneath I don't really know how it's doing it. Even if I have a reasonable understanding of what. If you're a manager and don't understand how, you can rely on your engineers to know it. When you're an engineer and you don't know how. It means no one knows.

In practical terms it probably doesn't matter. But it's still an unsettling feeling.