My entire point is that implementation isn’t sufficient for understanding. Alpha Zero is the perfect example of that; you can create an amazing chess playing machine and (potentially) learn nothing at all about how to play chess.
…so what’s your point? I’m not getting it from those two words.
Understanding how the machine plays or how you should play? They aren't the same thing. And that is the point - trying to analogize to some explicit, concrete function you can describe is backwards. These models are gigantic (even the 'small' ones), they are looking to minimize a loss function by looking in multi thousand dimensional space. It is the very opposite of something that fits in a human brain in any explicit fashion.
So is what happens in an actual literal human brain.
And yet, we spend quite a lot of our time thinking about what human brains do, and sometimes it's pretty useful.
For a lot of this, we treat the actual brain as a black box and don't particularly care about how it does what it does, but knowing something about the internal workings at various levels of abstraction is useful too.
Similarly, if for whatever reason you are interested in, or spend some of your time interacting with, transformer-based language models, then you might want some intuition for what they do and how.
You'll never fit the whole thing in your brain. That's why you want simplified abstracted versions of it. Which, AIUI, is one thing that the OP is trying to do. (As I said before, I don't know how well it does it; what I'm objecting to is the idea that trying to do this is a waste of time because the only thing there is to know is that the model does what the code says it does.)
Sure, good abstractions are good. But bad abstractions are worse than none. Think of all the nonsense abstractions about the weather before people understood and could simulate the underlying process. No one in modern weather forecasting suggests there is a way to understand that process at some high level of abstraction. Understand the low level, run the calcs.