That's the joke (even though it really happened).
But it's also kind of the trouble. Whatever system or non-system you implement there will always be assholes looking to exploit it. How do you explain to these kids that an absence of rulers doesn't mean they can go around bullying everybody?
There are two distinct thoughts about what anarchy is. One is the idea that without oppressors everybody will live a more fulfilled life and the other is that without control people will fuck everything up.
I think anarchy is the natural state of the world and over time there will always emerge groups of people looking to control others. And the moment you try to take measures to prevent that you no longer have pure anarchy.