I assume you're talking about Janet, but I think the half time in general presents things some men don't want to be exposed to.
Is what why Huge Heifner died alone and poor?
Ok, honestly, most men don't watch the half time because of how it disgraces the Superbowl tradition, but that would not keep men from the Game. Wild, rabid boars couldn't keep men from the Superbowl. Even if the boars watched MTV.