Earlier quoted context omitted.
I see this argument over and over again, and it is so flawed that it is hard to bear. There is no equal sign between a person and a program. There is also that thing called "scale" that is critical to the interpretation of the action. Is eating meat fine? - maybe. Is eating all animals OK? - Hmm...
The question is not whether a person is equal to a program. The question is whether a person is doing the same as Copilot for this particular case, i.e. reading source code to learn. You have not really given any argument why this is not the case. Or maybe your reference to scale? So only because Copilot has read more code than a human possibly could, that makes it different? But why exactly is reading a bit of code…
In all fairness, the article mentions the Fair Use doctrine. You could make the argument that reading a bit of code is allowed, but doing it at a large scale would not be covered as an exemption to copyright.