Behind the Xuanhuang Realm stand the Three Emperors and the Five Sovereigns; who can say for sure that no great figures are behind the sects of other worlds?
Gu Jinlai has not killed many with the Eye of Thunder Punishment, or those entangled with karma?
Who can prove it?
Moreover, those wicked to the extreme often hold high positions and power, themselves representing the ruling class.
Outsiders will only see Gu Jinlai's wanton and reckless slaughter.
Such behavior is no different from divine spirits or evil gods.
Even powerful evil gods are sealed within the Heart of the Cosmic; if Gu Jinlai truly uses the Eye of Thunder Punishment to harvest world after world, it won't be long before an Immortal Golden Immortal or even an Immortal Venerable personally strikes to capture and kill him.
