why do they call the Georgia shooter "deranged"?

What was his agenda? To kill?

I read that he is 14, and that he was interviewed last year by police in Georgia. Apparently schools in the area were told to monitor him, but how can they do that? It doesn't mean anything and is just something law enforcement, schools, or any authority say when they can't do anything else. Although anonymous posts were made by the boy online, his father was the one with the guns and police determined the boy did not have unsupervised access to them. He probably did, but what do we want? If they had taken his father's guns, US would be closer to a dictatorship.

I never understand why people's response to crime is to advocate less freedom for all, more restrictions for society. It is an irrational and hysterical response.