Have talked about this on other threads, but I'm in that "old" school group (still in my mid 40s, so not sure how old that makes me).I could be wrong but my opinion is that the fan sentiment of losing interest or quitting has more to do with how they feel about Rutgers coming off this past season as well as their negative feelings going into next season. Sure there may be a few "old time" college basketball die-hards who never come back - but if RU's prospects were to suddenly change with high profile recruits/transfers or even a coaching change......or......if RU turns it around on the court....many of the people lamenting the state of college basketball and that they are losing interest in RU would be singing a different tune. Maybe RU will never be any good with the current rules. But generally in sports, nothing lasts forever. There will always be another season, and eventually new coach, staff and players to look forward to.
I was a "college basketball fan" with a special rooting interest focus on Rutgers. I am no longer a "college basketball fan"... just a Rutgers fan.
If Rutgers has a very good year, that will likely draw more of my interest in Rutgers.... but my broad college basketball fandom had never been based on Rutgers' success (or I'd never have become a fan of the sport until a few short years ago).
There are plenty of newbie fans that were drawn to the sport by Rutgers' success for whom your post undoubtedly applies. My fandom predates that (even predates my enrollment at Rutgers, back when I rooted for SHU, ND, and Michigan). I'm likely the minority, but I doubt it will ever be rekindled. My engagement in the sport (outside of Rutgers) seems to now be relegated to the realm of nostalgia.