it works well for laying out information for reading, and has some additional markup beyond just layout (unlike markdown), I'd argue it is fairly rudimentary and not extensible.
It's extensible in other ways.. but either way i'm moving back to Obsidian due to constantly tinkering and trying to improve my "experience" on Emacs. Obsidian gets me 90% of the way there without much fuss. It has far better image handling, and with Canvas - the possibility to lay out my own notes in various configurations is nigh endless.