I’ll have to research this one, but I’m pretty sure Nietzsche would count righteousness, the sense that bad must absolutely be punished. as a sublimated impulse to cruelty, a diseased manifestation of the will to power. Righteousness gives one’s urge to hurt others the veneer of moral respectability. Members of diverse factions in our society are afflicted with righteousness. Nietzsche would be quick to call out the righteousness of many religious believers. Today, the righteousness of deluded Trump supporters would draw his notice as well.
The big hazard of a strong sense of righteousness is the high stakes of faulty judgment. The person with a strong sense of righteousness knows full well they’ve wished harm on those they’ve perceived to be bad. If it turns out their perception was wrong and they’ve wished ill on undeserving parties, then they, the righteous, have done serious wrong themselves. And the righteous are already signed on to the agonizing suffering of the bad.
Given the high stakes of getting it wrong, the righteous have a strong incentive to never back down. And so stubbornness is born of righteousness. And the cruel are highly committed.