I think Quad was referring to the builds over in the UK not here in Australia. In that respect he is just stating the obvious that plagues countries that have far less restrictive rules than Australia (eg - USA, NZ). Even still, the amount of "chopped hectic VE's" in this country would beg to differ. We have just as many dodgy cars here in Australia, the only difference being that folks that do those builds have gotten slowly better at hiding the dodgy builds while in the other countries they just celebrate the builds.
I've got friends that have (on their P's) built rb's into 350kw+ monsters and put them in their already legally registered 1.8ltr NA 180sx. They just keep the car looking clean, completely stock and put a conservative exhaust. The cops never pay any attention and since building rb's is one of the only cheapish engines in this country (outside of a v8) they just keep it registered as the stock car. If they happen to crash they just tear the engine out themselves, buy another body and replace the engine once again.
Personally I'd disagree on the point of modding newer cars. We don't see it here because of location and cost but if you go to other countries like above you will note a vibrant modifying scene for brand new cars because they can get away with it far more than we can.