It's because it's terse with quite a low amount of mnemonics (a meaningful feature is only 1-2 characters, there's no padding for a spacial understanding of hie

It's because it's terse with quite a low amount of mnemonics (a meaningful feature is only 1-2 characters, there's no padding for a spacial understanding of hierarchies, etc.., compared to your host language), and even though it comes in very handy, most developers aren't spending a large amount of time writing them in your average project.