Eh, if he caters to the liberal college crowd, he's probably going to get an uptick in local business. The "*expletive deleted*' phrase is real popular with the kids these days. They'll all think he's hip.
It would be the same if a pub in Portland or Seattle did it. They'd probably get a hip-hip-hoorah from a majority of locals, even if the rest of the people in those states boycotted the place. If nothing else, he probably knows his local audience.
Except you are wrong, in that the colleges in SC tend not to like other areas.
My college, most students had guns in the cars, carried pocketknives, went shooting, etc. Clemson is much the same (my sister is a student there), just larger than my university was. Hell I had a prof that had a bunch of guns, mainly handguns but also an AK, and another who hailed from LA yet had a CCW permit here. We openly talked guns and shooting without any hassle. And college student organizations raffle off guns all the time around here.