Thenewwwguy
Deity
Also, I would definitely say there are measurable and meaningful degrees of nasty. Cyrus for example was a relatively progressive leader for his time (even though he didn't "outlaw slavery" as some people claim) and he seemed to be conscious of many of the ills that people suffered, and even tried to alleviate some. Now contrast this with a Josef Stalin, a Pol Pot, even someone like a Leopold II. Some leaders are more cruel than others. Some nations commit atrocities far worse than others. There is a meaningful difference between outright genocide and war of conquest and defensive war.
This is a key point. Most leaders until at least the renaissance were basically forced to be leaders who conquered. Conquering was a necessity in ancient and medieval times. Especially in the cases of people like Genghis, who was actually a lot like Cyrus, who you mention for his actual governance strategy.
It’s imperative to stop comparing ancient and medieval leaders for their death counts to modern evils like Hitler because in the modern day, Hitler did it out of hate rather than necessity and war wasn’t a necessity in his time.
warmongering was something common even among ‘peaceful’ leaders in those times, and recognizing that is key to understanding that the only people who should be left out of consideration for civ are modern leaders who murdered out of hate, intentionally caused poverty, etc.