Ibrahim Saddiq Conlan also called for the overthrow of the Australian legal system in favour of the controversial sharia law, the Islamic legal system.
"[the Australian legal system is] the primary cause of the spiritual, economic and environmental crisis in Australia," he said.
"Democracy is evil, the parliament is evil and legislation is evil," said Mr Conlon.
The debate was organised by Mr Peter Madden from the Christian Democrats Party, in response to a controversial advertising campaign in Sydney calling Jesus "a prophet of Islam".
The original debater and moderate Muslim apologist Dia Mohammad pulled out of the debate leaving Mr Conlon to respond to the question: 'Should Islam be promoted in Australia?'
Mr Conlon blamed social problems such as alcoholism and prostitution on the failed Judaeo-Christian legal system and democracy.
Mr Madden rebuked Mr Conlon saying that while he agreed alcoholism and prostitution was a problem in the society, those problems would not be fixed with sharia law.
"This is not a religious debate because Islam is not a religion, it's a political movement. Islam not only defies the Australian constitution, but is seditious to the Australian government," he said.
Joining Mr Madden in arguing against the promotion of Islam in Australia was Ms Vickie Janson, author of Ideological Jihad.
Ms Janson, an experienced debater on the Islamisation of Australia, said the Muslim community themselves are very open about why they live in Australia.
"The only reasons a Muslim is allowed to live in Australia, according to Islamic leaders, is to draw others into the religion, for medical treatment or to learn a skill to take back to a Muslim nation," said Ms Janson.
A small minority of the 300 attendees who jeered and insulted Mr Conlon when he addressed the meeting marred the debate, held at the University of Sydney.