As I’ve stated before here, if wages for waiters are over $10 per hour (the federal level is less than $3) where I happen to be, then I simply figure that the tip is built into the price on the menu, and they will get what the bill says, and not a penny more.
Waiters (to include females) are so accustomed to receiving tips that if they are cut off, the quality of their service likely will suffer, even to the extent of sabotage of food, despite receiving more in wages than many of their customers.
In the end, it’s service that will suffer. The best servers make the best tips and the crappy ones are quickly weeded out. If there is a guaranteed wage of $12 an hour, the good ones will immediately see that their efforts gain them nothing over the slow, forgetful, and sullen servers.
Look up “socialism”.
This is all about raising the minimum wage and unionizing the service workforce. Currently, unions have no way to get a slice of tipped income. If they do away with tipping, then they can get a slice of the $15 hour wage.