What's wrong with Grav?

MJ posted a thread asking why Hotdog was banned and Grav responds with this:

Are you the fucking public avenger or something? Do you see a great social injustice? Mind your own business. It was a joint admin decision, and it is only for 2 days. He is capable of posting constructively, but seemingly refuses to do so very often. Maybe this will remind him that we don't need more morons. If you have further questions, PM someone instead of making threads about it.

He was just curious. Why are you making such a fuss about it? I don't think it was very deserving, but that's not my call.