It makes rendering mathematical notation very easy, also automatically tracks indices, references, labels, etc. I can even embed csv data to display as a table with a few lines of code!
It's also pretty straightforward to break down the paper into various folders and documents and import them all in a master .tex file, keeping your figures and data in their own folders too.
Can't imagine doing all of that in a bunched up in a word doc...
I mean, you can even do all the building in a container, so I often check in my work, push, and the CI builds the paper and makes a release depending on tag/branch.
This was over 15 years ago.
CS and math are outliers.
With IEEE Word was even more common.
https://www.science.org/content/page/science-information-aut...
If it's because of managing latex's complexity indicating some kind of ability, I can guarantee you that most people just copy paste and tweak stuff till it works.
Based on former fellow students, I knew many would just stick to what they are fed and never get the idea to acquire knowledge on their own. And Latex could be just one of the things that shows curiosity and independent knowledge acquisition.
Our brains tend to associate good looking with well-researched when this isn’t always the case, hence the refrain quoted above.
So, if someone goes through the trouble of using a cumbersome typesetting tool like Latex to format a paper, perhaps they have made an important contribution that is worth setting aside 15-30 mins of your time to digest the thesis in its entirety.
If I open a thesis and see it was done in Latex I always think this guy can't be an idiot.