Academia. At least, its widespread (almost universal) where I am studying. Mainly to manage citations, figures, and tables of contents automatically. Tools like Sharelatex are used for collaboration on papers.
Is it really a problem that requires manually writing the code? Seems like there should be more elegant solutions by this point.
You can turn on citation linking (in the text), you can apply a custom latex template.
Once it is all setup, you just write text in Pandoc Markdown.
New students do occasionally complain about images/figures not being where they are relative to the text in the code, thats a solvable problem in latex by embedding it in a minipage but honestly people complain about images having a mind of their own in word too ;)