This is so powerful, it makes me wonder why they didn't just make a new markdowny syntax for Latex so they could reuse everything from the Latex ecosystem. A bit like what CoffeeScript was for JavaScript, I mean.
That assumes that the only issue with LaTeX is its syntax. Other issues I can think of are that LaTeX doesn't generate HTML and that LaTeX is completely Unicode-disabled.
Out of curiosity, isn't UTF implementation much easier now than it has been? I piddle in writing things and I rarely contemplate UTF. Once I tried to reverse engineer an encryption plugin that used Asiatic characters as the ciphertext, and I wanted to use emoji, and that was when I learned I am too dumb to understand utf. But there's libiconv, which I first saw in production (ICQ or aim or Trillian or so) over 22 years ago, personally.
So is the latex thing obstinance, technical, or political?