Yes, I am aware that there is no reference in the Australian Census about Latinos but this is trivial, there does not need to be any reference. You seemed to be confused on who actually is Latino and this seems to be your main point of debate. Going by your logic the pages Anglo-Celtic Australian and Black Australian should be drawn into question as they are also not referenced in the Australian Census. The rest of the page shouldn't need citations and references as no more information than what is available in the census is really given. And how exactly am I wrong? "I'm not saying that your entirely wrong" Again this opinion seems to me, to have come from your belief that I am not aware of what or who a Latino is, and in my opinion, no offense intended, is due to yourself not grasping the concept of a Latino. My view is further strengethed by your comment: "I think it's dubious to list people because they're of Latin American descent all down as 'Latino Australian' when they are in fact of different ancestral, ethnic and national backgrounds."
This is exactly what Latinos are, of different ancestral, ethnic and national backgrounds. This is the great and unique thing about Latinos is that they can be White, Black, American Indian, Asian, Multiracial and of all different nationalities.