The code greatly expands the allowed uses of NM, and you're complaining?
One of the objections to the acceptance of NM has been its' contribution to the "fire load." So limiting the use to small or fire resistant buildings seems consistant.
I have always seen NM associated in use with wood balloon-frams (stud type) buildings. Oddly enough, the prior limitation on the use of NM was three stories....the highest you can go with that sort of framing. It seems everyone just understood NM wasn't for use with block, steel frame, masonry, tilt-up concrete, or whatever other methods were out there.
In like manner, balloon framing was associated with residential construction- not commercial. Of course, today we see that line crossed- a lot.
Personally, I think NM is limited more by the fact that there are limited wires in the stuff. This in turn limits your flexibility- anything more elaborate than 20 amp light/receptacle circuits are best run using other methods (the odd stove/ water heater circuit notwithstanding).
