> Tipping makes servers actually care about doing a good job.
Tipping incentivizes servers to care about getting more tips. This is why there is a stereotype of American servers rushing you out of your table to seat the next party, upselling on more drinks/food, and constantly interrupting the setting by "checking on" the party.
A good waiter gets the main plates on the table after appetizers are finished and responds when I flag them. They are a queuing manager that synchronize orders to the kitchen to optimize delivery to the table. Tipping does not inherently incentivize this, and I'd say it actually incentivizes the worse service in the form of clearing the table as fast as possible in order to acquire the next table's round of tips, or as is often the case, crowding a table up with every appetizer, side dish, entree, and drink the table wanted throughout the dinner.
