I say this not because you're wrong - I'm sure that using built-in modules for .zip parsing is faster and easier! - but rather because I don't know whether or not it's worth knowing how to do that. In the AI days right now there's argument being had about whether learning any coding at all is valuable. My gut says it is, but I've also spent years learning before AI, so maybe it's a sunk cost fallacy.
Regardless, my feeling is that we haven't found the balance between what's worth making every programmer learn/implement themselves, and what's worth abstracting away. Maybe implementing a .zip parser gives you some kind of secret wisdom that makes your future work better?