That’s true, but how often have you heard a finance team member wanting a CSV file so they can more easily process the data using Pandas or visualize it with MatPlotLib? How many accountants or finance people (especially those that ask for everything in Excel) do you know that is comfortable writing even a single line of Python code? How many of the finance team’s Excel-based tools will Python integrate well with? What feature(s) does Python within Excel provide that Excel (formulas, pivot tables, VBA, Power Query, Power Pivot, etc.) does not provide that someone on the finance team would need? What advanced charting/dashboarding functionality does Python in Excel provide that isn’t better accomplished in PowerBI (if not handled by standard Excel charts/graphs)?
Don’t get me wrong - Microsoft’s implementation of Python in Excel has its merits and will solve some problems that otherwise would not be possible in Excel and will make some people happy. However, this is not the solution most people were expecting, asking for, or find useful.
You could use the web version of each of those apps. They may not have complete feature parity with the corresponding Windows desktop versions and the web versions may be a little more challenging to use, but you should be able to get by in most situations. The nice thing is that you can try it out right now on your Windows device to see what your experience would be like on Linux - just make sure you use the same/similar browser you would use on Linux.
The bigger issue with switching to Linux for school is likely going to be non-Microsoft software that one or some of your classes requires you to use that only supports Windows. If you are not able to get it to run with WINE or a Windows VM, you may be stuck running Windows for a few more years.