Isn't the article forgetting the biggest factor: The human delivering your food?

They will be delivering for hundreds of people and may well be infected. Do you need to hide behind the door and ask them to leave it there and hand them a tip somehow. Because holding a 6 feet distance while they hand you your grocery/food is not gonna work.

I asked the same from the delivery guy Yesterday, he threw everything he had and run away like I had the plague :D. So be careful.