The article states he was "brandishing" which is utter nonsense. Open carry does not constitute brandishing.
The California law was amended to disallow open carry after several groups there staged gatherings and dared LEO's to test their resolve. I encourage open carry, but doing so respectfully is the trick.
I've lived in KY five years. Only twice have I ever seen someone OC. My 15 seconds of fame was a brief interview on a local TV news station during the church OC event, but the pastor has since moved elsewhere and I don't think it caught on very well.