I’m from Australia and lived there off and on. People can and do alter vehicles including lifting them. Your assertion you can’t drive with a 6” lift is flatly false, although 3” is more standard. Many people exceed the statutory limit and simply get away with it. You’re right that 40s are rare, but they’re also rare in America.

Vehicles with 40” wheels and 6” lift are extremely rare. I haven’t seen one in at least a year, but I’ve personally witnessed multiple accidents in the last year.

If you’d said something like 35s with a 3” you might have made your case a little better.

You can complain about this all you want, but the main problem in terms of vehicle shape is crossovers which are widely available in both America and Australia.