Ok it's annoying me that people are treating incels as inherently violent. MOST are not. They might hold misogynist views but that doesn't make them all killers in training. Stop demonizing people who are already extremely messed up... Or anyone for that matter.
Involved? I'm sorry but there is as much evidence at this point that the guy was just shitposting 4chan YOLO style than being an actual incel. (unless more than the FB post have been uncovered that I'm not aware of)