As well as what the others have said, the line would still have to go back to the PCP to get to the customer. Just like FTTC. Thus using up (by retention) a load of the linking copper pairs and decreasing the FTTC connection capacity unless another 100-pair linking cable (or whatever) was installed. With a high probability there would be no room in the PCP for the necessary patch panel.

The way it has been done simply needs a single fibre from the FTTC cabinet to the pod, and releases copper links for FTTC.