I would also be curious as to what caused this behavior.
For every action, there is an equal and opposite reaction... not that I agree with this in totality but I think it would be "understandable" in certain situations as people are emotional beings.
Few years back I was driving my newly born daughter back home from the hospital and this one jerk off cut me off so bad that I had to swerve to the adjacent lane to avoid an accident. Normally I would just cuss the hell out of him inside my car and no one would be the wiser but this particular situation I had my daughter in my car. I really wanted to strangle the other driver but instead I calmed myself down proceeded back home safely with my bundle of joy and enjoyed the rest of the day.
I would also add that whoever posted this video is taking no responsibility of their own actions and condemning this detailer without justification that is apparent to the viewers. I think we should reserve our judgement as there are usually 2 sides of the story.