That's actually quite an interesting approach and I wonder what the limits of implications are.
Could we for example imply that Bo and Luke are not only shagging Daisy and each other, but in addition have raped and/or murdered numerous other people? Could we imply they've lynched anyone? If we can, what else could we infer? If not, why not? What limit did we exceed?
Or could we go the other way and imply that they do lots of anti-racism stuff offscreen and that they're using Confederate symbology and names not to glorify it but to mock it? And that they are therefore non-racist and (with additional implications) non-incestuous?
Since one aspect of racism is ascribing negative traits to a particular people group regardless of any evidence that those traits are true (like for example the English thinking of Irish people as stupid, although for the most part I don't think we do that any more), could ascribing incest and racism to citizens of southern states in itself be racist?
Same way I'd explain a sciency-type person who doesn't know the difference between there, their and they're.