I love the smell...
of cowardice on a Friday!
"Sorry Kiwis, this is not going to make the bad thing go away."
I stand by that. And likewise appreciate the nigh on impossible task of eliminating Child Abuse on a global scale, for the reasons you state (one man's meat is another man's poison, as it were.)
To take a stance which, IMHO, cries out "We're all right Jack. Our citizens can't get to this muck!" is simply denial of the worst kind:
"LA LA LA LA LA! I CAN'T HEAR YOU, I CANT SEE YOU, YOU DON'T EXIST"
Unfortunately, the Kiwis will be railroaded into this by the "Won't anyone think of the children" brigade.
This will do NOTHING to prevent even a single incidence of Child Abuse. It may even make things worse domestically. IE, no- easy on-line 'fix' available, some will be compelled to satisfy their perverse craving in reality. NOW think of the children!
There is no 'easy' answer.
But this, IMO, is not part of the answer either. Neither is implementing this on a global scale.
This is the thin end of a potentially massive censorship wedge.
"Everything you think, do and say,
Is in the pill you took today"