That implies that it was just a small handling error that no one should be blamed for and is something we have to accept.
No that's not what it means.
There are already plenty of other avenues for action, aside from the criminal justice system:
- The airline can take disciplinary action, including termination
- The regulator or an administrative court can take enforcement actions, including revocation of licenses / certificates
- The victims/families can seek damages (including punitive damages) from the pilot, airline, etc., in civil court