Regardless of the point you want to make, don't link news.com.au as a source and expect it to be considered reliable.
Mike Tyson may well be an absolute pig of a human being, but news.com.au won't reliably demonstrate anything except what they want the housing market to do. It's a real estate corporation with a news website and about as biased as they come.
Have you considered that a ban from Australia may simply help Australians?
Also, Australia implemented a social media ban for under 16's which has paved the way for other countries to do the same.
The world needs to send a clear message. Idiocracy was never supposed to be a documentary. Executions are not entertainment.