Why not just have the AI say please and thank you at every possible opportunity on a loudspeaker?

If an AI can scam old people out of their retirement I dont understand how the drive through attendant isn’t just replaced with an AI yet. I know easy to trick and all that but that’s the one job most people hate at fast food. Add like 5 speakers so people can place 5 orders at once and then have the person go to work making food instead of taking orders.

McDonald’s briefly had an AI run their drive thru. Apparently it got a lot of complaints, but honestly it massively improved my local McDonald’s order accuracy and speed. It was significantly better than the extremely shitty employees they normally have working the line.