I don't think its really acceptable behaviour for the open road, and I don't think "he knows what he's doing so its ok" really cuts it, its the same as a trained marksman going into a street and randomly opening fire just because he is good doesn't mean he wont kill somebody. I'm not saying i've never done anything wreck less in the zed, of course I have I'm only human but i've never filmed it and put it on youtube to show the world how much of a tool i was being, especially showing my face and reg plate..what a total f*nny, he deserves to be arrested just for that!
R