Every single one of these people who commit these acts have something not wired right in their brains which causes them to follow through.
Look, they were not born that way, generally, it is the result of the environmental influences around them. Outside influences/life experiences are the CAUSE of almost ALL mental conditions.
When Joe-blow goes and gets a 'good' job making lots of money at UPS, he might or not might not notice the insane amount of bs happening. Even if he does, he's likely to 'stick-it-out' for the paycheck...but all the while, he is suffering from mental abuses that start to pile up. After it gets bad enough, he might feel trapped, because there are few other options with similar pay and he now has expenses that rely on his wage. That is a recipe for disaster.
I think you are completely missing the point, though. I'm not saying UPS has to fire all existing mgmt. All it would take, to dramatically change the chances of this kind of thing from happening, is a couple policy changes. That's all. But they willfully chose to maintain their institutional repression. I've already demonstrated (which was quickly then censored) that they train people to use pre-checked checklists....and they had JUST ended TWO supes careers over that. OVER DOING WHAT THEY WERE TRAINED TO DO. All because they maintain a 'scapegoat the small fry' environment instead of holding the right people accountable. Austin was fired for supposedly communicating with a non-ups email address (a gmail account)...but the HR lady failed to realize that he and his co-workers were REQUIRED to use them for CEAS audits. Because the terminal didn't have a dedicated camera for this, they had to use their phones to take the pics and then email them from their gmail accounts to their UPS accounts. But it doesn't matter, because at the end of the day, UPS just continues to lie it's way through things and not accept responsibility for their actions. Well, it didn't matter. Until now.