This is also the thought process of most Masters of Primordial Energy—everything is for their own people.
After all, a Master of Primordial Energy who has lost their civilization will not only lose the potential to grow stronger but also the meaning of living.
As for whether Shen Shi agrees or not...
You must understand, this has no loss for them. Even if it doesn't succeed, it's just a few less cannon fodder prisoners. As for exposure, it's bound to happen sooner or later. Although they're here to exploit the chaos, they're not here to be rats. The goal for Shen Shi is to become a third party that truly profits from both sides by strength.
"I can impose another restriction on you," Shen Shi said, "and give you some autonomy, allowing you to activate this restriction to protect your own safety when you wish, but the time cannot be too long. Once deactivated, your words and actions will still be restricted, and only in this way will it be less likely to be discovered."