dude that's just sushi
this is the biggest reach I've seen since...well a bunch of mayo criminals reached australia
this entire thing just feels like settlers being butthurt that they a) have none of the history/tradition of the old world and b) unlike america, don't even have any recently found pop culture relevance to offset the former
There's plenty of Aboriginal and even some trivial white Australian culture, claiming a certain shape of sushi is not that (not even Americans do this, and the few that do "Detroit pizza" are rightfully made fun of and bullied)
Australian sushi is a thick hand roll made from half a standard sheet of nori. Its shape is distinct from Japanese temaki hand rolls, which are often cone-shaped, as well as from futomaki thick rolls, which are similar in shape but usually served sliced.
so it's literally just unsliced sushi lol. It's not even like some characteristic ingredient, like with California Rolls and Philadelphia rolls using avocado/cream cheese (which are def not Japanese)