Let them enjoy their CWS win - the only thing they've ever won before was a bowling championship so of course they're high on winning and talking smack. College Baseball is an extremely regional sport - softball is more popular across the country while those in the SEC West and a few other places tend to really dig baseball. Maybe UT baseball will finally gain a bigger following as Serrano has finally managed to get UT promote the team but we've got a ways to go and without a lot of fan support it can be that much harder for teams.
The Vandy obsession tho is getting old. And I'm not trying to be mean it's just that few of us outside of M. TN ever hear about it and don't care as much. Honestly many of us from E. TN & W. TN as well as many of who remember only a few short years ago can't fathom whatever the issue is between Middle TN Vols and Vandy fans. I get that it's there, I really do, but from the outside looking in it looks wayyyy overblown and not something we should be worried with outside of game day. You outnumber them in droves and they're so few in number it's not like they're everywhere as obnoxious as they might seem to you - ignore them no matter how much they might grate you. People didn't become this obsessed when UK beat us and TBH I consider them more of a traditional rival due to location, ginormous border, fan interaction/friendship/interaction and the fact that it's across two sports (hopefully the teams in both sports will become more competitive soon).