Not the OP, but in my experience, when you are doing math, physics or CS and don't use LaTeX, you'll be looked at sideways. There is virtually no alternative when it comes to typesetting advanced maths.
Yep. "The authors don't use TeX" is also sign #1 on Scott Aaronson's "Ten Signs a Claimed Mathematical Breakthrough is Wrong" https://www.scottaaronson.com/blog/?p=304
> This simple test (suggested by Dave Bacon) already catches at least 60% of wrong mathematical breakthroughs. David Deutsch and Lov Grover are among the only known false positives.
I have friends who used MS Word to write their thesis in CS undergrad.
Surprisingly it is possible to write math in a LaTeX-like fashion and they show up quite well. I have had more trouble aligning things with Word than with LaTeX so I kinda looked at them sideways.
The math support in MS Office is sufficient for some tasks and it's actually very usable then. But I find it woefully underpowered when it comes to typesetting advanced stuff. I come up against its limit quite regularly (I need to make my slides in Powerpoint for $REASONS). Also, annoyingly, it slows down significantly when there are lots of nested blocks (e.g. subscripts, superscripts, which I need often).