"If they like Kid Rock, so be it."
That is not the issue. The inaugural doesn't belong to them, or indeed to the Bush family. It belongs to the American people, and especially to Bush's supporters.
Acts at the inaugural shouldn't clash so conspicuously with the base's values.
A great point which to my knowledge has NOT been brought up on either of the two KR threads.
you don't own the base and the base is not exclusive to your interest.