the big difference here is that for a programmer, doing it "right" means making it better for them, not for the end user. it's mostly about things like being able to measure how "correct" the software is, or how easy it is to change things in the future. indirectly, this can make things better for the end user, but only inasmuch as it makes it easier for the programmer to make things better for the end user.

the things the OP talks about are things that designers claim make a direct difference to the end user. if you know a programmer who claims that about indentation, he is, in fact, crazy.