That's my feeling also.
Cue Twilight zone music:
Maybe this shooting is a blessing in disguise.
Maybe the shooter had a brain chip implant and somehow the blue screen of death appeared. No one saw it. No one knew how to "Control/Alt/delete". Drugs seemed the only way to cover up the screw-up. The brain chip started functioning based on what the eyes saw on another computer screen. It became a chip to chip communication. Would-be shooter became more and more obsessed with computer games to the point he couldn't differentiate between reality and cyber world.
Question: If the government messed up with this particular brain chip implant, would they notify the public? Never mind, they sealed the files.
Would they stop chipping? nah, it creates jobs
oh, yeah, the blessing: Maybe this would stop chip experimentation and implantation. Yeah, I'm dreaming.
Where's my remote control? I need to switch channels.
ah! a commercial!
Maybe he was the remote control and the FF button got stuck, or maybe he is just a looney reprehensible POS...either way it's evil personified!