New Zealander here - I didn’t get a great deal of the jokes in TN, and didn’t see them as particularly funny for those that I did get. Some of the sterotypes I was probably missing maybe so couldn’t identify very well.
New Zealander’s definitely make fun of themselves all the time - just witness the great comedy of the likes of Billy T James or the (not so funny) Topp Twins
I have no idea how that movie went over money-wise over here in the Netherlands, or even if it was in cinemas at all, but I have seen it and I thought it was pretty funny.
Anyway:
How exactly do you think we aquire those stereotypes? Anyone with a a passing interest in American movies and pop culture would get that it’s a completely over the top parody. It’s not like american sarcasm is subtle
Of course there are. Poking fun at the thick stereotypes of parts of your country is easy.