As a classical guitarist, western notation is not particularly good at expressing the music our own culture. The high open E string can be and is regularly played on the other 5 strings too, potentially at the same time! Natural and artificial harmonics, which string to play on and which fingers to use, and all sorts of right hand notation all feel very much bolted on cluttering the actual score. The continual coming and going of voices due to technical limitations means that music has to be experimentally decoded with much backtracking.
Western musical notation is not useless for denoting the music of other cultures, but it's also not very good and is frequently quite bad. If you think of western musical notation as "the system", you're at risk of remaining ignorant of the beautifully refined languages, developed over centuries, in other cultures.
It's also a highly abstract language that seems to frequently, somewhat like Javascript, lead its users to have very little familiarity with what is going on at lower levels.