Excel is used as a database/storage/interchange format, especially after the initial analysis by someone who uses python or R. Bioinformatician does the analysis, then the PI wants to see it so they can Ctrl-F for genes they are interested in, so out comes an excel document. And really, even if you know python or R, are you really going to fire up a jupyter notebook, load the data, and run pandas queries every time s…
I don't do any scientific research, but I have been using jupyter as a replacement for excel since it was called the ipython notebook. I don't really use pandas all that often, I just find it easier to read and edit data in python. Though I first learned ipython added the notebook from a talk Wes McKinney gave about Pandas.