It is not a Tennessee thing, or anti-2nd Amendment thing. It is a clownshoes thing. Most of the OC I have seen is by buffoons, using cheap, shoddy gear that just screams "dumb narcissist", just like the situation described by the OP. The person described is at best a slob. Far too many of the OC types convey a poor impression to the general public, a group that is overtly hostile to us. I have seen nice gear with BBQ guns, but it is not common. Most of the serious shooters and fighters I know (i.e., people who avoid ARFCOM) have the same views.
I will never forget the call to which I was sent that came from some whiny crybaby (I knew from the start that this was a whiny crybaby, because the area code in the call was 360; like 206, 253, and 425, almost everyone with such an area code with whom I have dealt professionally is a whiny crybaby and a pain in the gluteal muscles). He was all bent out out of shape over someone OC in a grocery store. He could not describe any misconduct, he was just scared and uncomfortable and thought there out to be a law as a result. Yes, he is a worthless piece of excrement whose opinion is not worth the carbon dioxide he expelled in giving it, BUT: there are a lot of people like him. They HATE us and are just looking for an excuse to screw with us. OC makes us a lot of enemies in some settings and locales. Contrary to the claims of advocates, I have seen nothing that tells me that the practice de-sensitizes the antis or even the undecided to the sight of armed citizens.
I want to get left alone. I do not want some idiot to give me a lot of grief, or make some B(ogu)S call to LE because they have an agenda and want to make a scene, cause us problems, etc. They are out there, and they are common. It is a tactic advocated by these antis. Most of the time they are skirting the law about making a false statement to LE, so they will not get charged.
There is a time and place for OC - I get it. Some places, it will be common. In a rural area, working outside, I just might. People whose carry piece is accidentally exposed should not be at risk of being charged - that is just stupid. I get it. The idiot descried in the OP? Heck no.