I suppose the concern is that one will "snap" after taking a sip of beer while at a restaurant. In that case, no one should ever visit such an establishment due to the general danger of being around other people doing the same thing with a wide array of improvised weapons within reach. Or maybe the public just needs to see responsible behavior being demonstrated.
Perhaps more correctly, the antis are concerned that a LAC will, just like the anti, snap or otherwise become unhinged after imbibing.
Somewhere I once read a study that compared gun control/gun rights attitudes with convictions for DUI. (Actually the study was about the attitudes of those convicted of DUI towards other criminal behavior. "DUI is bad, m'kay? But GUNZ is worser."
stay safe.