Ah, you're right, I totally missed that! But tbh that makes less sense to me. If this was pre-LLM then this is suggesting that humans were opening pull requests that change correctly-spelled words to incorrectly-spelled words? Is that some weird attempt at steganography?
I always find it a pity when someone has been clever and it's missed. "Spelling incorrection", get it? It's not a correction. It's the opposite.