and i've seen this vary problem for years, that is, for a very long time players have been complaining about HLW problems, and every time the GM fixes it, things are great for a while, but they always come back.
i've seen this problem with countries of all sizes from 50M up, through the years. So rather than just saying the GM have it wrong... you could ask, "what am I doing wrong"
once a guy sent me a message why i ran my country econ the way i did, saying that it made me look like a newb, but i was making 50% more per pop than he was. And ironically, that is the state corp, high tax model you are currently using, that he though was a newb approach.
what i'm saying here, is that if you take a different approach to what your doing, you might figure it out.
perhaps my method has flaws, but it is a solution, and i'm confident that i can figure out the next solution, and adapt, rather than expecting the game to change to accommodate my way of doing things.
so yes, i am saying your list of people are stuck to doing something a specific way, assuming their way is right, and the game is broken. i've seen this, over and over again in the years i've played.
i'm offering you a different way, that solves your basic problem, that you could probably improve, rather than simply dismiss.