Many rules reflect the original intentions of their creators, and despite their seemingly problematic nature, the most problematic are the people who turn these rules into tools for their own benefit.
It's like locks are only necessary to guard against the dishonest; if everyone were honorable, there would be no need for locks in the world.
When Giant Li implemented the cloning project, perhaps brotherhood prevailed over the desire for control.
Indeed, Giant Li opened two space pods in succession and then said, "No matter what He Wangsheng and Zhen Yitong have done, in my heart, I still view them as brothers. No matter how they've betrayed me, I still remember how we stood by each other without desertion in the face of danger in the ancient tomb."