I see a few advantages. For my work in particular, I have to rely on creating desk study reports via exporting PDFs from QGIS - this depends on export DPI, page size etc. Following that I have to pull those plans into e.g. Word and it's a messy system.
A python notebook would be a nice way of generating reports of GIS data in an interactive way without being forced to use pages, PDFs, and embedded image files.
Where I work, I can't give anything is not a word document to anybody else in the company. A python notebook might help at creating the figures for example, but I can already do that with QGIS layouts.
If the working environment allows for checking/reviewing within the notebook, I guess this could help automatise things.
A python notebook would be a nice way of generating reports of GIS data in an interactive way without being forced to use pages, PDFs, and embedded image files.