As I read it, the sign was posted prior to his incident, and he did not (in his post) mention advising or advocating for signage; merely that the signs were there and have not yet come down.
I looked for the sign on Bilo's doors, and would probably never have noticed them if others on Opencarry.org had not forewarned me, as the signs are rather small and off to the side. They are easily missed.
I should have made it more clear that I was responding to post #57, directly above mine. He responded to a necro thread with new information.
I quote here the referenced part:
--snip--
In the letter I shared my experience, informed them their signs didn't meet the legal requirements in NC or SC, explained that their policy was anti-safety and anti-consumer and asked them to reconsider.
The following week, on April 2, I heard back from the head of legal council. He claimed that "BI-LO’s policy is based on its sound business judgements and seeks to honor the saftey and security of employees and customers. This is the same policy adopted by all other major retail chains of which we are aware." but that they would "review the current signage in place at our stores to ensure that it fully complies with applicable state law."
That "helpful" exchange does not benefit us in the least.