Not the original commenter, but I share the same sentiment.

The harm done is that there is less human interaction outside one's bubble. Before deliver-anything-at-home you were forced to be in environments where you'd interact with people you'd normally not see.

At some level you're also building a connection if you're interacting with the same service employee or bump into a neighbor.

Strong communities is a massive boost to public health. It reduces loneliness and prevents all kinds of deceases (heart stuff, dementia, etc). It also builds a safety net so people don't have to rely so much on official healthcare.

Now obviously just some food delivery is not destroying community by itself. There's probably worse offenders out there. However, society becomes more and more parallel and robots do contribute to it. Unfortunately it's not something that's discussed a lot.