I disagree with your analysis. Ultimately, the Belters gained control of the ring gate (their proverbial "land back") and this was viewed in the narrative as a noble outcome, even if Avasarala felt betrayed. As far as Inaros goes, I think it is natural for oppression to breed contempt for the oppressor. The oppressed aren't innately good people or bad people. They are people, some good and some bad. It's not an overly conservative view point that some of the oppressed feel justified in retaliatory actions that are horrific if the oppression has been harsh and lengthy. It's reality. In fact, even Inaros's son is struggles with whether or not the loss of Earther lives was justifiable, and he was ultimately portrayed as a good person (IMHO). The Expanse had the depth to represent both good and evil in both the oppressors and the oppressed.