Because it basically is IMO after seeing some video reviews lol. Where those "flaps", for lack of a better term, cover the center ribs - they're actually open so water can flow/evacuate like a commercial tire and the sharp edges can bite in softer surfaces like light mud, sand, snow, etc like an AT. Additionally that extra contact patch is there to help braking/launching with a load so they seem intended to serve a dual function in weather/mild off pavement uses as well as on road.
Based on everything I've been seeing it actually looks like it could be a really solid tire. I just wish they had more sizes than 20s honestly - if they had a 285/75/R18 I'd probably be giving them a try for sure. Are they as aggressive as what I usually run... no not at all, but if they function as well as I've been hearing I'm seriously tempted to let form fit function here.