Org Mode is large enough for different people to value different subsets.
What's important for me is the tree structure, tags, states (like TODO, but I use many custom variants in different files), links, archiving, quoting (including code blocks, but I don't need to run them in place), easy per-file properties, easy export to many formats. I barely use time tracking, and never use agenda though.
Anyway, a subset of features implemented is a good foundation for further development.
Most if not all of the features you listed are also possible with Markdown (though unfortunately different tools & parsers slightly disagree on the syntax).
What sets org-mode apart is the interactivity: time tracking, code execution right in the file etc. Though of course if you're already an Emacs user the choice is still pretty clear.
Right now I'm trying out Obsidian, with a plugin it has kanban boards using Markdown in the background. Which is the one kind of feature I've missed for a long time: actual 2d representation of content instead of keeping it limited to linear text files, sometimes vertical lists just aren't quite enough.
What's important for me is the tree structure, tags, states (like TODO, but I use many custom variants in different files), links, archiving, quoting (including code blocks, but I don't need to run them in place), easy per-file properties, easy export to many formats. I barely use time tracking, and never use agenda though.
Anyway, a subset of features implemented is a good foundation for further development.