Funny, I didn't this message from what was released from the OECD. My take was more aligned with this -
"In its Economic Survey of Australia, the OECD says while the Mineral and Resources Rent Tax (MRRT) is "justified" and is set to finance a number of welcome initiatives, should commodity prices fall faster than expected "this policy could lead to a structural deterioration of the budget".
"Spending decisions should be disconnected from resource tax revenues," the Paris-based institution says."