I do not think that is the problem with markdown lol. There are lots of problems with markdown, especially vanilla or the more limited versions of it - but really its super power is that it is readable with a regular text editor (or `cat`) and can be rendered without a compilation step.

Markdown is not competing with latex or typst, it is competing with (and has won against) .txt files

Actually basic typst is as readable as markdown, e.g. this is the example from the webapp:

  = The Typst Playground

  Welcome to the Typst Playground! This is a sandbox where you can experiment with Typst. You can type anywhere in the editor panel on the left. The preview panel to the right will update live.
  
  = Basics <basics>
  
  Typst is a _markup_ language. You use it to express not just the content, but also the structure and formatting of your document. For example, surrounding a word with underscores _emphasizes_ it with italics and starting a line with an equals sign creates a section heading.
  
  Typst has lightweight syntax like this for the most common formatting needs. Among other things, you can use it to:
  
  - *Strongly emphasize* some text
  - Refer to @basics
  - Typeset math: $a, b in { 1/2, sqrt(4 a b) }$
  
  That's just the surface though! Typst has powerful systems for scripting, styling, introspection, and more. In the realm of a Typst document, there is nothing you can't automate.