The goal isn't to improve the AI performance using the cheat sheet, it's to produce a cheat sheet at all that efficiently distills intuition about these 22 million results.
Presumably if it's written in plain text and useful to the AI, there may be some relevant information in there that will be interesting for humans too.
As I say, I understand the goal of having a cheat sheet that can distills a big chunk of math. But that distillation would have been better done by a neural network instead of the creation of a prompt (fine-tuning or pure distillation). But studying that neural network will be harder.
It's explicitly stated that the goal is to improve performance of cheap models but I assume, like you did, that they are hopping that the plain text may be useful to humans too.