>>96013431
It doesn't just magically make itself fine, though. Torquemada dies several times in the story, and more than once his servants keep trying to keep the flames of hatred alive. Even the portions of the empire that Torquemada leaves well enough alone are still rife with corruption and xenophobia, since the Monad crosses over to another series to try and use a blackhole generator in the Termight Empire to essentially collapse everything into something akin to the Warp and basically infect the universe with humanity's evil. Even at the end of Nemesis when the Termight Empire is officially reformed into Terra, Torquemada's cultists keep hiding out waiting for his return and trying to overthrow the more tolerant leadership. Torquemada himself has to outright be bound to Nemesis and his ship and hurtled through space and time to keep his cruelty in check, cause in a follow up story the exact moment he gets out he almost undoes every reform under the new Terran leadership just with his cult of personality, and it takes another binding to finally be rid of him. Like >>96013504 indicated, Torquemada is similar to the God-Emperor of Mankind in role, but in temperament he represents humanity's capacity for cruelty and spite far better than what you could get in Warhammer 40k, especially when you see that the only person he's ever shown capable of loving besides himself is still just as an extension of his idea of a "pure" marriage.