Right, I can do those things and sometimes do. Similarly to per-file I generally don't need to because I try to write and commit a logical change at a time.

I have no problem with people who do it some other way, it just seems odd to hear people proclaim a particular way to work with git is wrong, because it does not match how they work. Not sure if it's because they can't imagine any other way of working, or they just think all other ways are also wrong.