For people who are already in academia and want to be more academic? I don't get it.
This notion that Masters are for academia is so contrary to my experience altogether. They are not even associated with research, in my experience. What I have seen is:
* BSc: General professionals.
* MSc: More specialized professionals.
* PhD: Baseline for research, but more often than not just doing even more specialized work than folks with MSc.
* Postdocs: Actual researchers, including but not limited to academic careers.