Crazy doesn’t need a motive.
Crazy doesn’t seem to be a consistent theme in the presumed shooter’s life.
“Crazy doesn’t need a motive.”
Not true. Even a crazy person banging his head against the wall has a reason - just ask him.
Something motivated this guy to do what he did; it took time & effort, and planning - not the hallmarks of a “crazy” person.
Most of us are interested in learning what drove him.