Personally, I use the same metric more or less for my pistol; If I can articulate a fear for severe personal injury it comes out. Somebody in my personal space being overly aggressive and refusing to step back yes, standing at a distance yelling general obscenities no. I'll do my best to avoid the fight first, pepper spray second, and the pistol (or knife) as an absolute last resort.
it wouldnt have come out in that video. My window wouldnt have been down either.
But a drive by with a can of bear spray would have been mighty entertaining. LOL