Im the mass market most of the folks in that thread are talking about that just eats up the marketing. The thing is people in that thread kept saying the shorter boards will never stand up to big mountains. And if it's built like a traditional board, absolutely not. Line skis has this thing called early taper where the contact points are elongated. In theory this creates a longer effective edge. However you really need to commit to getting the skis on edge. The nug looks like it offers something similar and I think thats how they get away with the shorter size. plus you add in the spooned tip and tail some v-rocker and now you've got a lot more float.
The one logical argument in that thread I felt was how the side of would make it hard to traverse. Ive only done a couple ver short inbounds traverses and its definitely more difficult. however, I got better at it so it's a matter of adapting.
Also, I don't split board or venture BC much anyway. Ill be getting some alpy slack this year, but thats gonna be it. Was reading one of the avy books and it scared me enough to not be super interested in anything far out. Inbounds pow is good enough for me these days.