The lack of the specific term "incel" and the insistence of him being single and misogynistic in the motive being mentioned by police and politicians is rather telling.
As far as the Australian authorities and Government are concerned, single men are just as much of a terror threat as other well known groups. They're also preparing to interview the perpetrators family as if they are implicit in this tragedy. Expect the Government to take action through new laws and measures considering their assumed background and majority of victims.
Government creates problem. People react to problem government created. Government must now take people liberties away to solve problem government created. Typical liberal pattern.
And with the current state of the dating market, it's likely that we'll see more men disenfranchised from the dating market and society. Their proposed solution of ending "femicide" (the security guards life does not count to the media) will not deal with the underlying root cause but will denigrate all single (unvetted) men as a threat and a danger in a western country intent on implementing safetyism.