Apparently, he was protesting against elitism. Well, where should I start? Firstly, you hardly need to show yourself to be anything more than mediocre to be accused of being elitist these days. Some people are just better at doing something than others. By that definition, the Olympics are elitist, Manchester United are elitist and the Royal Marines are elitist. If what he's really against is financial priviledge, then he has more of a point, but shouldn't aim his protest at a sporting event.
Secondly, even taking his point that it is wrong to be elitist, is this really the right target to aim at? It certainly gets a lot of publicity, but most of that would be negative because it makes him look like an idiot. He risked his life out of what appeared to be jealousy. Have a crack at a society event or a film premiere! It would be a lot funnier for a start, more of a practical joke than a disruption, and people like that.
Finally, he might welcome the presence of an "elitist" soon, in the form of an Oxbridge-educated barrister.
Incidentally, that former priest who ran onto Hanger Strait also pushed over the leader of the Olympic marathon. How the athlete stopped himself from punching him on the nose is a mystery to me.