Nitrox Requirement

[BioDiver]

I think the problem is that Nitrox is not a necessary piece of equipment for a dive. It is simply an option divers can choose to pursue on their own if they feel a need to deviate from the "standard." It would be like saying that all new divers would need to learn how to use a DPV or the proper use of a drysuit or basic techniques of cave diving. It simply isn't needed for recreational diving and the vast majority of new divers are exactly that; recreational.