"Tips" to Doordash and Amazon food delivery workers go to the company rather than to the worker, they cancel out the whole of the worker's base pay.

The article seems to err in equating this to tipping of waiters. They are not the same system. Yes, the waiter's base pay is below minimum wage — but the restaurant does not claw back that base pay when the waiter gets a tip, as Doordash and Amazon do.