I believe we're talking about kernel development here, not GNU utilities. However, what naming scheme would you prefer? The command line is fairly unintuitive as it is. I would argue it is preferable to have short, memorable and fast to type names.
Which leads me to suspect that if there were a demand for "a big file to source in your bashrc to alias 'cp' to 'copy'", it would exist. It is not exactly a difficult thing to do, but nobody actually cares enough to do it (probably because it is not actually a problem).