Prior to my last renewal, my thinking was the same as yours bladeangle... but my then ATO interpreted CAO 40.2.1 para 11.3 differently ... "unless, in the immediately preceding 90 days, the holder has performed an approach using the same type of navigation aid..."
In other words if I have done a VOR approach in the prior 90 days then that would satisfy a recency for a DGA using VOR as tracking since this is using the "same type of navigation aid" - namely a VOR.