No, a social credit system will not work alone either. If they still have guns, then a social credit system will result in all of the people telling them to go to hell. You'll have to kill off the crowd of thinking people right away

The CCP did not have a social system almost instantly after Mao took power, he killed all the people who can think for themselves first using organized Red Guard mobs and mass starvation and they aren't trained to fight since some while ago.

No, a social credit system will not work alone either. If they still have guns, then a social credit system will result in all of the people telling them to go to hell. You'll have to kill off the crowd of thinking people right away.