Dash is for folks that don't see tipping as required. There are lots of new drivers, because dash doesn't pay well and good drivers move on. Zero tips are hidden until after delivery, but drivers will remember bad customers and not pick up their order. Free shipping is for Amazon, not food delivery. The driver has to invest in the customer: gas, time and loss of other, maybe better, runs. This is not the same as waitstaff, they merely walk to your table. Non-tippers CAN get it themselves, too.