I don't evny the powers that be that have to determine who the halftime entertainment is every year. Having to determine the demographics of who may watch the Super Bowl for that particular year. No matter who they end up selecting, there's going to be a segment of the population that's not happy.
Does Katy Perry cater to the sexagenarian demographic? Of course not. But reading the reviews this morning in many of the major news sites, it seems that the demographic that the show was aimed at was pretty pleased with the performance last night.