Perhaps because he is not a politician and therefore feels no need to be discrete lie to continue getting elected?
Would Dr. Carson, LTC Allen West, et al agree or disagree with Mr. Bundy? Perhaps someone should ask them.
They probably wouldn't use the non PC, and hence forbidden, words "Negros," or even "Colored People" (as in NAACP), and they would not likely suggest that slavery had any significant merits. But I'd bet that their views about the Democrat Plantation are not much different from Mr. Bundy's. Or mine.
My guess is “because he’s a blowhard who loves the sound of his own voice.” Why else would he venture into “negro” territory when that had nothing at all to do with why he is in the news?