I suspect this story is an attempt by ATO to exert pressure on the govt to change the law. It is not coincidental that this article comes out just after our Federal election - the ATO knew that it had no chance of it getting traction before then as both political parties do not want to make any changes to our GST (sales tax) law as the every interest group will be clamering for removal of tax on their pet good and it becomes a no win political nightmare.
IMO the problem is that it becomes impossible to clearly define bullion vs non-bullion. At the boundry of the definition there is always room for scams. IMO the law should changed so that there is a 10% sales tax on the value added to the raw gold in the item, ie the fabrication cost, only. As a formula it would be GST = Absolute(sale price - metal value) x 10% - FYI the "absolute" covers buybacks below spot - if you are buying back below its real value then that is an implied fee or value add for refining the gold, that would stop all the scams dead. The business would have to be able to prove the fine metal content of each item and the value of the fine metal at time of sale re international prices, if you don't have an inventory system that records that level of detail then 10% on the total sale amount. For real bullion dealers that would not be a problem, for jewellers and other that would probably be too costly re GST saved for the customer so they would bother. Simples.
My concern is the above is far too simple for the ATO and they would rather just charge 10% on everything including bullion but that would be a mistake, as people would just then migrate to pooled accounts, ie finalisied forms of gold investment and physical gold sales would dry up, so less tax recouped.
The spin by the journalist is so biased, it is as equally regulated as other industry who deal in cash and are high risk AML.