TLDR from a memory of watching this video a couple of months ago:

Despite many attempts at various musical notation systems, they all have trade-offs. Detractors of standard music notation aren't always forthcoming with the trade-offs of alternatives, if they even suggest an alternative. Due to the nuances and complexity of music, standard music notation is about the best system we have iteratively developed over the past few centuries to describe music in a way that is cross-compatible with so many instruments and techniques.