He's not just a random crazy person that bought a gun and went on a spree, there was a lot of planning involved, so he's probably a terrorist of some sort.
Deliberately planning mass murder doesn't make you a terrorist, just a mass murderer; terrorism is defined by a very specific kind of motivation that is far from the only motivation for planned mass murder.
He's not just a random crazy person that bought a gun and went on a spree, there was a lot of planning involved, so he's probably a terrorist of some sort.