The bank that she mostly uses and promotes is an overseas bank, and they give 0% interest for citizens who buy property in Australia (not sure for how many years it stays at no interest rate though). So I do are with the above statement.
From my perspective, I think this is a large part of the problem in our capital cities.
I'm not super-educated on real estate or finance but I don't see the abolition of neg gearing bringing down prices at all. Banks and whoever else will ensure that prices stay the same.