If they add surcharges like the one mentioned, what makes the restaurant think there would even BE a tip? The only tip forthcoming should be in the form of a reminder that the patron would not be returning.
Our county added a “meals” tax ... I go to restaurants just over the county line to avoid it almost all the time. Once in a blue moon I have to eat out at a place with the meals tax - I don’t take it out on the wait staff, but internally ‘gripe’ when I see the “add ons” (taxes) to food that is already expensive. Because of the expense & often poor quality of food/preparation & iffy service, 99% of the time I cook/eat at home ... I can do poor food & bad service myself for a lot cheaper than eating out.