That's why a judge often has to determine if the person is mentally ill or just a criminal.
There are plenty of situations where someone has hurt other people and they've been literally insane.
If your insanity causes you to believe that someone is doing horrible things like murdering children you might decide to do them harm, thinking you're the good guy.
In reality you have paranoid schizophrenia or a litany of other mental health issues.
It's not cut and dry :-/
Another article: https://www.njhomelandsecurity.gov/at-a-glance/9-21-20
Unless there is other evidence, you’re just blindly speculating as to his intent.
This thread and press coverage is just reputation damage. Most newspaper articles are not even 90 % true, so rampant theories go floating until innocent some people are burned for life.