It means that just because a human can't read the code doesn't mean the code is not correct. Obfuscators exist, for example, and it's conceivable that the LLM writes perfectly correct code even though it's unmaintainable to us.
I want to have the ability to understand each relevant layer of the system, even if I don't necessarily have the full understanding at every given moment.
It's perfectly fine to do that, but also realize that other people might just choose a different layer, and that's fine too if the end result fulfills its purpose.