Shen Feng didn't have the last Nanomechanical Cluster self-destruct. Instead, he left it behind.
Technology itself wasn't the problem; the real issue was human greed and desire.
On this Earth, human civilization was like a tiny flame in a gale, in danger of being snuffed out at any moment.
The Nanomechanical Cluster's existence was crucial for human civilization.
After all, restoring the former glory of human civilization would require more than just the factories Shen Feng had left behind. It would require talent, time, and knowledge passed down through generations.
Until then, humanity needed a powerful force to protect itself from extinction.
Otherwise, a global windstorm or some other catastrophe could easily wipe out what was left of civilization.
Of course, Shen Feng didn't hand over administrator privileges. Instead, he granted the Salvation Army Warriors high-level auxiliary administrator permissions.
