Why did the Busan police officer explain why they artificially failed the interview?

Why did the Busan police officer speak about the act of artificially failing the interview?
In reality, after studying for 10 years, going to an interview that is your last chance, failing it can actually drive a person to death.
In Busan, when the Busan Metropolitan Office of Education reversed a passing result just once, it caused an uproar because someone committed suicide, right? And the people in charge went to prison?
It really happens like that. However, they left without revealing the identity of the person involved. Because of this, a person who was already receiving treatment for neurosis—someone who had been undergoing long-term treatment—was actually diagnosed with schizophrenia.
At this point, it is a relief that the person didn't die. If they had died because of this, the police officers would have all been arrested for causing a death during an investigation.
But when the person failed the interview they had prepared for 10 years, they suffered from extreme depression, and because they couldn't endure it anymore, they tried to seek retaliation.
Perhaps that is why the President said at the time, "No matter what, you shouldn't do that," and "You must never do that," telling them not to let it explode. Honestly, the person didn't have those kinds of intentions originally, but this is something one cannot endure.
The police officers were truly short-sighted. Police officers who have worked for over 10 years and have children in college surely would have thought the child would become distorted.
They caused a triple accident. Failing the interview was illegal, causing the child to suffer from schizophrenia was illegal, and nearly killing the woman was illegal. The police officer caused the accident, but because the person endured it all while seeking treatment for mental illness on their own, nothing happened to the woman.
Even though the person endured everything to prevent any incident, I heard the police officer said things like, "The child shows no remorse."
I heard the police officers were trying to cast them aside like this. The child is receiving treatment for mental illness, but hasn't received even 10 won in medical expenses. This way, the entire family will perish.
They said they were acting to help drive that child to suicide.
Look closely. Why did such an upright person end up causing one of the most significant incidents in the country in Busan?