Maybe 'cuz no one gives a @#$% ?
Yeah, pretty much. He's been outspoken throughout a lot of his career on political matters and the views expressed in that song is not at all inconsistent with his past views.
If he'd suddenly started shilling for the PNAC and claimed Bush and Rumsfeld were incredibly good leaders and that we need to convert the world to Christianity, there'd be a bit more of a ruckus with his fan base.