This guy is an undercover intelligence spy/agent provocateur (there are a lot of those). Either that, or he is a dangerous fool who is using his position to rile up the masses of Muslims to wage war against the West. Instead of calling for the peaceful co-existence of cultures, ideas, and nations, he is calling for the restoration of a mythic Islamic Caliphate through violence. Hopefully no one in Australia actually takes this idiot and his words seriously.
Source: MEMRI.