I’ve been using exclusively Linux since high school, and now I’m doing a PhD in math. It’s always been pretty smooth. I used to have a separate Windows rig for gaming, but don’t really need it anymore, now that Proton works very well with most games. (I don’t really play AAA games, so that helps.)
Coming to the point, for academic stuff, I mostly needed to use a PDF reader (Zathura and qPdfView), LaTeX, and some computation and graphing software (mostly SageMath). I sometimes needed to use DOCX files, but LibreOffice works well for that. Most other software I need from time to time are usually Linux native.
Also, many universities provide access to O365. I’ve used it in some rare cases where I needed to provide input in some collaborative document. But in most cases, I was able to convince my friends/colleagues to use Google Docs instead.
Unless you do CAD, or some creative work, Linux should be perfect for your usecase.