I understand you point but the way you are stating this is not true. As you improve you are getting closer to more stars. TB is a pure numbers game, yes platoons help (a lot) In mission completion rate, the points that are lost can be made up by just straight up GP.
I am not trying to comfort you or justify anything, just want to be clear that they did not move the goal posts, they are still at a fixed numerical position that can be reached. They did move the starting point back.