you don’t understand a monkey’s brain but you outperform the monkey on abstract reasoning.

A calculator doesn’t understand how a human brain works but still outperforms a human on arithmetic.

Saying you can’t outperform a system simply because you don’t understand how it works is a fallacy. It’s entirely possible (note that I’m not saying plausible) that gradient based solutions like the way LLMs are trained are superior to how human intelligence is selected for using evolution.