You'd never say "I'm sorry if I offended you" to a person's face, unless you wanted the person to know you didn't mean it. (That makes you a cruddy human being, by the way.) Yet every public personage who causes a ruckus by saying something offensive tacks on the "if I offended anyone" bullshit, turning the apology into a giant "fuck you" to everyone who was offended.
Jesus H. Christ. Either apologize or don't waste your breath.