All of the experts that I have heard are clear that the main risk comes from the person-to-person transmission of the virus, and when someone touches their face (you cannot, for example, contract it through skin-to-skin contact); and that in this case, with this virus, on certain hard surfaces, it will remain (in a much weakened form) longer than viruses typically do, and again, if you touch those surfaces, and touch your face, you may transmit it. Hence the constant reminder about hand-washing. When out and about, it is really hard to a) avoid people b) avoid viral contact c) not touch your face and d) wash your hands. So this is the main reason for the social distancing and isolating rules.
However, it is still a virus and operates as such! It operates differently, in certain respects, to other viral illnesses, and you are right Mother, we don't know all about this yet but it's a virus, not bacteria - e.g. like E.Coli - so it can't be spread by contact with food, in any meaningful way.
So you are partly correct, but what those of us who think this was fine to do are trying to say, is that the risk is so small as to not be worth concentrating all this effort on. The other risks are way, way more significant and overdoing it on something not relevant just doesn't help.
Back to your brownies and droplets point, that you keep repeating, without any recognition of what anyone else has posted in response!, let's say they do sneeze all over it before they give it in to the neighbour (this is firstly so so unlikely as no normal person does this), unless said neighbour is going to face-plant on the brownies very shortly afterwards, and potentially contract the virus, it's just not a reasonable proposition. Eating it is not a form of transmission.
Look, I know you don't agree with this, and that's ok. But allow other people the courtesy of making different choices, including OP, as long as they are following Government instructions and not causing harm
(said hopefully
)