Using the cellphone as a dashcam for evidence in case of accidents is smart. Uploading what are mostly incredibly minor traffic violations, misunderstandings, or irritations to YouTube seems petty and vindictive. I'm sure if someone followed around you or any of us with a dashcam all day they would find minor violations and things to be annoyed about as well.
I can understand if it was serious incidents like a drunk driver or something, but congrats on nailing the homeless guy who took a bit too long to cross the street. I'm sure when he checks YouTube from his cardboard box under the overpass he'll be suitably chastened.