> nor is it something I want
Agree on both points. You shouldn't have to, but if you live in the US you very often so, because customer service staff are chronically underpaid.
The full answer is legislative, so make sure these people are paid appropriately. The short term answer is that yes, until the problem is fixed we do have to concern ourselves with how other people are paid.
The driver delivering your food or groceries typically gets a tip, but the driver delivering your package doesn't. It could actually be the same driver since they are now both gig-economy jobs.
Warehouse workers, retail store workers, even the cooks and dishwashers at those same restaurants make less on avg. than waiters/waitresses, and yet don't get tips.
Tipping is mostly tradition, it has to do with how 'close' a job is to an end-user. There is little logic to it.
Underpaid based on the amount of money required to live life.