I am sure there are a lot that have an unhealthy obsession with Louisville, but it is the same in the other direction. Just perusing the Louisville boards for a few minutes makes that very clear. Look, the fan bases are made up of the same people, for the most part. It never makes sense to me when fans attack another team's fans based on generic stereotypes because it isn't as though one type of person becomes a fan of one type of school. Every major program has a similar fan base in terms of the people that make it up.
As for those that argue that you should be concerned with only your team and not take joy in the disfortune of your rival, I disagree. In life, I agree, but not in sports. Sports is about competition and entertainment, which means doing better than your competition and having fun in the process. Period. It means absolutely nothing in the grand scheme, from the standpoint of a fan. So I would expect UK fans to have a ton of fun with this, just as I expect Louisville fans to give UK nonstop crap for its issues 25-30 years ago and for Cal's issues, not matter whether I agree with the substance of the criticism.