Thars called a lie by ommission. If the default assumption is that you're chatting with humans, then there's some deception in a non-human masquerading as one.

>Society almost never differentiates between goods and services produced directly by human hands

Sure we do. We all have different expectations of a human service vs. Using a tool for something. Self checkout, for example. Or a robotaxi vs an Uber driver. Humans themselves can be a service and that can affect how we want to pay or approach one.