The War on Cash is now spreading to gold. The Powers That Be want to assure that you have no escape hatches, no means of avoiding the financial and economic pain they are about to visit upon you and yours.
They hate gold because it represents a vote against them every time someone chooses gold over their own poorly-managed fiat currency. They hate cash to the extent that real cash (i.e., physical banknotes) held outside of the banking system might allow you to avoid having your savings stolen during an overnight application of new banking rules (e..g, a bail-in) that would transfer your wealth into whatever financial hole your idiot bank executives had managed to dig for themselves.
These ridiculous moves tell me that we're nearing the end-stage of this long-running farce. Too many years of stimulating borrowing above and beyond any reasonable expectation of ever paying those debts back have now driven the system to a terminal stage.