A little perspective:
I believe jNW was originated by writers for BHGP, or at least that is where I found first references to it. My memory is that it started t show up around the same time Fitz became head coach. Personally, I found their writers well informed and wickedly funny. They also originated angry Iowa running back hating god to describe the year the first 4 Iowa running backs were injured.
The jNW context revolves around the disparity between the dominance of the Frey era relative to NU, the more recent series parity, butthe general superiority of Hawk to Cats in the late Walker year’s.
The reaction by Cats writers and fans with Io_a was appropriate and damned funny, and back-handedly acknowledged by commenters on BHGP (not unlike some Nebraska fans who acknowledge the “real NU” in years the Cats beat UNL).
My feeling is that broader use of jNW, as it is used here is arrogant, misguided, and misapplied, much as it would be if some fan of some other B1G applied it to men’s basketball. For it to make sense, you need a few years of the Cats overperforming versus a specific team, as they did in football against Iowa in the time the phrase originated.