Kuwees is a take on their accent - they can't speak well with a beak.
As for the criminal element - keep that in mind TMKIWI - or you'll get yours!
As for Stusmoke = not sure how to take that second paragraph - but if someone called me, or anyone a cretin, and regarded them as someone to go first in line on a patrol for an IED - well, in person, due to my families military background (and not suffering fools gladly) I'd beat the livin s**t out of them. A simple task.
With Kuwees, it's like your little brother - you pick on him, bash him up, fight with him, but he's your brother . Aussies and Kiwis are pretty much one and the same - hell , half of them come to live here in Australia.
There's a mindless, tiny percentage of either that lives by footy or that joke of a sport, cricket, or, as in recent days, goes all gaga over a bloody nag, but the vast majority just get on with it, and punch well above their weight, in all good things.
But Kuwees sure do talk weird!