This is like saying that a python interpreter isn't good for interpreting python, because frequently python programs might be invoked using a bash script, and s

This is like saying that a python interpreter isn't good for interpreting python, because frequently python programs might be invoked using a bash script, and so python is incomplete without bash. If my weird squiggley that I use in my specific niche field isn't represented by any Unicode code point, does that mean that Unicode isn't good for representing English?