By oppressive governments, revolutionary armies are often accused of being terrorists, which they in fact technically even are. They destroy civil infrastructure, attack supply ships and (try to) assassinate government representatives. They're illegal paramilitary organized forces with political goals, even that should be enough. So in order to get rid of a terror government they become terrorists themselves. Given they succeed, they would build a terror government too, sooner or later. Best for Dragon's RA would be when their new government gets usurped/couped by another group that wasn't busy killing people over the last decades.