Kind of a silly article. If you're working in education administration or local government then why would you even expect career progression? These are not growth industries.
Career progression is of course nice, but the larger issue is just being paid a living wage. In my case, I have money, I can walk away from my job any time that I want to, but I love what I do. Most people aren’t so lucky. The politics are hard, because there is this characterization (and I have seen it here at HN) that state employees are lazy, incompetent, inefficient, have huge pensions, collect large amounts of overtime, and more. In my experience, while there are exceptions, this really isn’t true.
Some environments require progression as a sort of anti-stasis measure. Famously including army officers, not exactly a growth industry either. https://en.wikipedia.org/wiki/Up_or_out