Imagine reading some fiction book, like fantasy or something like that.
You see a state that was created by genocide, which was continued until there was barely anyone left to kill, which state then became world hegemon, took control over nearly entire planet economy and proceeded to find new targets for genocide, ecocide, invasion, looting and murdering every political opponent.
You would think it's caricaturally evil, worse than Mordor.
And here you ask "they are now definitely a rogue state"? Now?