“I don’t understand what these two lines of code do, could you please modify, explain, or document.” is very different from “I don’t like the semantics of this function, replace it with this other one that does something unrelated.”
We’ve worked at both places, and one is useful, the other… not so much.
Look, if we want to spend 6 hours rebuilding our MBR/GPT, bootsector, and efi partition from scratch, using our grandfather’s butterfly, we should be allowed to. Insert angry xkcd here.