Like, I don’t think there’s a single group who’s killed each other more than the draenei species has
Hanging around argus, majority gladly join the galactic genocide organization and then immediately try to murder the rest who dont
Those guys then flee to other planets and eventually get to draenor, and immediately start trying to kill each other again (now with even more factions of them)
Did they murder each other on all the other planets as well? Did they only stop on azeroth because they finally ran out of a sustainable amount of draenei to murder?
Outside of the Man’ari Eredar, the amount of Draenei killing Draenei is not majorly different than the amount of Humans killing Humans. If anything, it’s less, simply because there aren’t as many Draenei as Humans.
And the Man’ari Eredar are a cut and dry corruption situation. They basically got brainzapped into Demons. There’s a reason they got the Man’ari distinction instead of calling the race the same thing.