discriminating critics of dark redneck dives
In John Grisham's "Firm", chapter 18, a married woman dated a married man, for business only:
"My husband would not unerstand this situation right here. That's why I chose that dump back there. We never go there."
She said this as if she and her husband were discriminating critics of dark redneck dives.
what does "discriminating critics of dark redneck dives"mean here?