ISIS/al Qaeda certainly know Tarrant's nationality so New Zealanders will probably be OK if they don't visit Erdogan's direct supporters for a while. I recall Erdogan supporters beating up South Korean tourists because they thought they were Chinese when Erdogan had it in for China at one time.
ISIS/ Al Qaeda supporters overlap to some extent with Erdogan's Brotherhood supporters.
For reasons of national security it is important that Australian politicians address the Christchurch massacre in a consistent manner with the arrest and prosecution of Tarrant's open supporters and collaborators being part of that message. The egg kid may be our saviour on this front if radicalised Wahhabi Muslims accept that this kid represents Australian public opinion.
Another overlay is Tarrant's crazy idea of triggering insurrection and division in the US which is something ISIS and Al Qaeda (essentially one and the same again) have always sought. ISIS/Al Qaeda may of course simply view Tarrant as a Trump supporter. Who knows? Al Baghdadi's longer term plan for ISIS was always to stir anti-Muslim sentiment in the so-called West as a platform for radicalising young Muslims. Tarrant's extremist group has played directly into ISIS' hands.
As I see it, ultranationalist white KKK styled extremists and Wahhabi Islamo-fascist extremists are singing from opposite sides of the same page. Everyone else is caught in the middle.