Word to that, and also what BigT said just above.
Are you also a listener of Pop Culture Happy Hour? I enjoy both (though I do get what you are saying); and it was PCHH that talked about Duck Dynasty months ago, with SCG doing so much more recently. PCHH, I thought, treated them with kid gloves, not wanting, it seemed, to sound like snobs. SCG was much more willing to sneer at the show, I thought.
I’ve heard versions of this defense repeatedly (another corollary is “he’s from the Deep South, what did you expect?”). First of all, what I expect from a nationally televised entertainer, whose gig is not ordinarily based around being a “shock jock” or politically polarising figure like Rush, is that they keep views that any halfwit would know are going to offend huge swaths of the public to themselves or a close circle. (Had this been surreptitiously recorded in a more private setting, I would see it differently.)
Secondly, though, there is an implicit premise, or rather two closely related premises, behind these defenses that I think are worth unpacking and examining:
(1) People on the far right wing are all bigots.
(2) People from the South, at least white older men from the Deep South, are all bigots.
I feel pretty comfortable with those premises, admittedly; but I feel like if I had asserted those on their own, I would have gotten plenty of pushback. On the first, from Ayn Rand fans and others who would point to figures like Allan West; on the second, from Deep South residents (like those I’ve heard from before on IMHO threads) insisting I was painting with too broad a brush.