It seems winning a World Series isn’t everything after all.
I think the same thing happened to Tennessee fans after 1998. First, with beating Florida and getting off the short end of the series, the rivalry hasn’t been as rowdy since then. Mostly, I think, due to the competitiveness of the games lately. Also, winning the National Championship removed the perennial underdog status, for a little while at least, although in recent years, as the program has slipped a bit, the underdog status has somewhat returned.