I guess it's about habit. In the end you are communicating. If I get into the habit of being rude while communicating with a machine, I would be afraid of this habit spilling over to my communication with other humans.
replyWhat about the risk that talking to a machine as though its human leads to thinking of it has human? That leads down a lot of dangerous paths.
reply> Is it worth getting worse results for that reason?
reply> accuracy ranging from 80.8% for Very Polite prompts to 84.8% for Very Rude prompts
I can live with that, for now at least.