It is a true statement that roads are used to transport goods and services.

They then simply ask who in the video is carrying goods and products into stores/homes, and how workers move goods from ports to the stores.

It’s a very simplistic and reductive view of roads, though, in response to a post that specifically mentions another function of roads, namely, facilitating people’s travels as individuals for their own purposes. It’s like you telling someone you like using lemmy because you’ve found communities you enjoy participating in and individuals you like talking to, and they go, “But the internet is for commerce, the buying and selling of goods! Who is selling and who is buying in these instances?”

Your example is overly charitable, in my opinion. Not everyone is being malicious with these sorts of questions, but the person is ignoring some pretty clear context explaining other uses of roads to go attach a strawman. At the very least, it seems like a bad faith argument.