This service makes it harder for us to get curbside slots, until our local store is able to respond to peaking demand, because people with normal immune systems will use these slots out of fear, when they have a much better chance of either not contracting COVID-19 in the first place, or of lesser symptoms if they get it, and in the meantime should be the ones going into the store, so that those with immuno-compromised households do not have to.
Your service makes no acknowledgement of this ethical dilemma.
I do not disagree that our local grocery store should do its best to expand its curbside service. They do seem to be trying, but this product makes it harder for households like ours in the meantime.