I agree with the article that The Huskers would benefit from better access to Texas Recruiting. However, the writer framed much of the reason that UNL has struggled was because they missed their rivalries with the programs that he listed in the article. Nebraska misses their rivalries with The Big 8 full stop. The old Big 12 was always a shot gun marriage that had them go from conference kingpin to second class citizen is short order. The depth of football powers in The SEC would render them completely irrelevant for eternity.
The reason they've struggled so mightily IMO comes down primarily to bad decisions made by those in charge of their football program. Firing Solich was a shortsighted move. They tried to break from the past and go in a fresh offensive direction. This failed spectacularly. Later Pelini got things moving in the right direction again, winning at a good clip, but this wasn't enough. Being an Iowa Type Program was beneath their ambition. Frost would be the answer to their program's prayers until he wasn't. Now it's Rhule's Turn. JMO, but their goals far exceed their reach.
They can be a competitive program in The B1G that makes bowl games every year and occasionally competes for a playoff spot with the right QB and schedule. That needs to be enough for their fans. They'll never leave the B1G due to money and association, but a return to The Big 12 and its very even playing field would do wonders for their program. I could see them going 10-2 and competing for a conference title every year. Ohio State, Penn State, UM, USC, and Oregon is a mountain too high for them to climb. The competition in The SEC is not even worth discussing. They would be relegated to a floor of Kentucky with a ceiling of Missouri. Not exactly a tempting reason to start chanting S-E-C over.