I will begin this story by telling you I used to work with the TABC and I acted as a contractor type of individual doing classes to sellers and servers of alcoholic beverages at restaurants and clubs. I gave the people a four hour class and tested them on it, and issued a state certificate saying they passed. All of this was so employees that sold or served alcoholic beverages knew that they would be liable if somone left their establishment drunk.
The bartender can be held responsible if some yahoo leaves a place drunk and kills somone. The idea is, don’t serve someone alcohol if they are obviously already at their limit.