I am not a lawyer but I am sure that any legal standard for ML has to be different than "isn't it just doing what humans do, but faster?"
GitHub scanning billions of code files to build commercial software is different than you learning at human pace, even if they're both "learning" and in the end they both produce commercial software.
The human activity most like training an ML system is memorizing a text by reciting from memory, checking against the original, adjusting, and repeating until there are acceptably few mistakes.
And if a human did so for thousands of texts then publicly repeated those texts, they would be violating copyright too.
It does not have to be different but it certainly can be different, a difference in quantity can certainly be a difference in quality. People watching other people walk by and a camera - maybe with face detection - doing the same are not only a difference in quantity but also in quality.
GitHub scanning billions of code files to build commercial software is different than you learning at human pace, even if they're both "learning" and in the end they both produce commercial software.