Truthfully----this story really seems like a made-up "I wanna be a tough guy" story. His entire attitude, the multitude of stupid things he did, several details that were gratuitous bragging....it all just feels like an "other people are telling stories showing how tough they are, I want to do it too!" sort of thing.
Have no idea if that is true or not. But that is what it feels like. If it IS true, there is a multitude of either stupid defensive choices or stupid "I'm a tough guy so I'm going to lie a bit here to make me seem cool" exaggerations. I count about 10 at first run.
This would be a good example to use in a CCW class----"How Your Brain Can Make You A Dead Idiot" in one short story.