Home Plate on Lombard Street in San Francisco has a similar policy, reported SFGate. Signs posted around the restaurant and on the menu asked diners to "Please Drink Responsibly. $50 cleaning fee per person for any incident incur as a result of intoxication."
Other brunch restaurants in the Bay Area use "mimosa fairies," servers devoted to monitoring the intake of guests.
Which type of liberalism is this? 
Depends on the generation. Theres been studies that gen z has been decreasing alcohol consumption. Party due to the hangovers and social acceptance that you dont have to get hammered.