Sure, for a simple sub like the one I used as an example. But that's like saying we wouldn't need a big table of contents if only people wouldn't write long books or if people wrote clearly we wouldn't need synopsis or abstracts. Sure, it probably isn't necessary to have a 6 line header for a 6 line sub, but if the sub runs to 20-30 lines, I'd rather have the header.
The idea is that I'm trying to make it easy to follow program flow. Two years later I want to be able to look at it and instantly see what it does and how it should be called.
"What do I want? I'm an American. I want more."