Rent has gone up a lot more than 15% in the past decade. The whole system is rotten and needs to be abolished, but all the servers i know are absolutely struggling right now and depend on getting a 20% tip on each table. How would you feel if half your paychecks were randomly 25% less? Stop going to restaurants that expect a tip by all means, but if you are going somewhere that expects it, you should tip.
People don’t want to be servers. They are there because they have no other options