I think Eddie Hobbs was one voice who spoke out, raising concern over the craziness during the property boom, calling it a false economy.
Yeah... out of one side of his mouth. Out of the other, he trouped around the country flogging his 'Brendan Investments' overseas property portfolio, getting free advertsing for it on the likes of the Late Late show. Wonder how that's doing now? He wanted to raise a certain amount and had to raise a minimum amout to make it viable. He held a press conference to announce the total amount he raised. Anyone remember when it was? ... The morning of the budget that year. It was almost as if he wanted the news of how much he had raised folded into a busier news cycle!
As for McWilliams, he was warning of a property crash each and every year since at least 1998. A stopped clock is right twice a day!