The main problem is that if you get sent any slightly complicated word document, it doesn’t display properly. Equally if you create something using it and have to send it to someone who uses Word, then it doesn’t work properly for them. For non-work things, I find Google Docs and spreadsheets do everything I need and I don’t have MS Office on my personal machine. YMMV.

It's not just LibreOffice. Microsoft's 365 web apps don't display desktop documents properly either.

I hear this all the time, but never experienced this. At worst, someone assumed I would have their Windows-only font.