The difference here is that the minimum wage for tipped workers is guaranteed. If wages + tips is less than the normal minimum wage, the restaurant has to make

The difference here is that the minimum wage for tipped workers is guaranteed. If wages + tips is less than the normal minimum wage, the restaurant has to make up the difference, but if wages + tips > normal minimum, they (the restaurant) don't get to reduce their contribution or retain a portion of the tips, and the employee has the opportunity to make significantly more than minimum wage. This is very different doordash's system, where if wages + tips is greater than the minimum, Doordash keeps some or all of the difference. I think its fair to say that people who are tipping their delivery person expect that their tip is increasing the income of the delivery person, and not their employer.