I asked a priest (in seminary) about this a few months ago - specifically whether "being polite" in conversations with LLMs (saying "please" and "thank you" etc.) was something I should do if I thought it might inflect on the way I talk with other humans later.
His answer was "I'm not sure" but that it probably wasn't a bad idea especially if it was going to influence habits or the way I speak with others or what expectations I have for those experiences.