Well I think one has to consider the possibility that neither Nokia or Verizon are lying. Nokia has simply said the phone does not have the hardware to support FM. A connector from chip to headphone IS hardware. That being the case, it might be splitting hairs but the reality is no one is "lying" if in fact that one critical part was not included in the phone's hardware.
I honestly think they are only saying that because verizon said not to enable the feature. AKA a excuse
Remember Nokia talks to Verizon before making/designing a phone, I'm sure it went down something like this...
Nokia: What type of phone do you want ?
Verizon: a phone a like the 920
Nokia: What type of features do you want on it we can offer this list of features <list of features that the 920 offers or upgrades from it>
Verizon round table: If we enable the FM radio, we will have to add headphones to the box at a extra cost and posable extra support call costs
Verizon to Nokia: Disable the FM radio and make it sound like the hardware is not there to do it
Nokia: Ok...
I think the Lack of hardware is just an excuse, the hardware is there in the phone and a missing cable ? Really ? If this phone was to be a upgrade from the 920, Why is this so called cable not even there ?