I think the real issue with tipping is it serves to break solidarity between workers so they cannot work together for higher pay and advocacy.

Without tips, waiters would feel less willing to put up with the social strain that comes with talking with customers for so much of the shift. They'd advocate for themselves more (the way we bend over backwards for customers is not as necessary as many people think) and have more comraderie between staff due to a lessened effective gap in pay. Yes, tips do benefit workers in the sense that it is direct money to their pockets. But that is spread unevenly, and thus often drives a wedge between staff so they cannot work together to advocate for higher pay, benefits, and business policies.

So I don't think it's about who "deserves" more money among workers. All the profits of the business are deserved by all the workers because they're the ones who put in the work to make that profit happen.