Source, a NATSEC podcast run by an ex-CIA guy: https://xcancel.com/ShawnRyan762/status/1875278042144162200
Las Vegas PD confirming it: https://xcancel.com/ShawnRyan762/status/1875278042144162200
The r/trueanon discussion: https://www.reddit.com/r/TrueAnon/comments/1hsxcx4/vegas_cyber_truck_manifesto/
"Connor O’Malleys best work yet"
I think it's mostly just that they're pretty stupid right wing guys. The difference between them and your garden variety chud is that they have military training and have gone through the conditioning that brainsculpts people into mass murderers.