It may come as a surprise that there are many VERY nice homes in the outter suburbs. A person is not measured by the value of their PPOR, nor the suburb they live in. Not that it's any of your business, we live in a very nice suburb that has average very nice homes. No, not new, but nice. It just does not come with the $700k price tag.
While I've got better things to do than to sit & read that article in it's entirety, I noted this little snippet "In 2005-06, 5% of households who had recently bought their first home did not have a mortgage" Half your figure, and you will find that some of them had a silver spoon, and others inherited. There really is a small proportion that save their way to being able to purchase their first PPOR debt free.
No you don't! You just said, and I quote "Investors living in low cost housing in low cost suburbs must not be very successful investors or are very cheap people. Not people to emulate." It's obvious that you feel superior because you have a high income & don't have a mortgage. Well, sunny boy, I may have a PPOR mortgage in a suburb that is below your standards, but I can betcha my networth is a hell of a lot more than your's. You can go take your cash, go stick it in a bank & watch it depreciate. On the otherhand, this unseccessful investor will keep her large asset base and have a sustainable retirement.
I agree that buying on credit for consumer purposes is going to erode your quality of life, but you simply HAVE to live somewhere. Unless you've been bludging off your parents while you save for your PPOR, you would have had to pay rent. Even you must admit that there is a break even point where it is cheaper to have a mortgage than to rent.
It is obvious that you have lived a pampered life & you are now on a high income. You're successfull! Bully for you.
But you know what, there are tons of people that don't have a large income & no matter what they do, will never, ever have one. They go about their lives & live within their means (well, most of them). They are not cheap people, just average, normal people. Take some time & stop belittling others. Normal, average people can not save their way to a PPOR. They save a deposit & get a mortgage.