Sociopaths do exist and a social credit system can be helpful in limiting the extent of their damage. On the other hand, at what costs?

Some social problems (illegal immigration in the US comes to mind) might not actually have a practical solution. For such problems, it might be the case that actually trying to solve the problem is much worse than just living with it. Kind of like back problems. Light treatment - like physical therapy - can be really helpful, but the heavy handed approach of surgery can leave you paralyzed / dealing with extreme pain.