I had the same thought about delivery-only stores. Honestly, I'm in support of it. I hate driving. But grocery stores are not up to the task right now with order and delivery systems.
My family used grocery delivery for 5 years with a lot of satisfaction. We had two people picking and delivering. One of the two people was a former chef and the other grew up on a family farm. They selected produce and made substitutions on an expert level with little feedback from us. We paid $5 for delivery and they never accepted tips.